142203420 has 72 divisors (see below), whose sum is σ = 432497520. Its totient is φ = 37820160.

The previous prime is 142203409. The next prime is 142203427. The reversal of 142203420 is 24302241.

142203420 is a `hidden beast` number, since 1 + 42 + 203 + 420 = 666.

142203420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 142203393 and 142203402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142203427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87576 + ... + 89184.

It is an arithmetic number, because the mean of its divisors is an integer number (6006910).

Almost surely, 2^142203420 is an apocalyptic number.

142203420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142203420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216248760).

142203420 is an abundant number, since it is smaller than the sum of its proper divisors (290294100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142203420 is a wasteful number, since it uses less digits than its factorization.

142203420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2115 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142203420 is about 11924.9075468114. The cubic root of 142203420 is about 521.9593485761.

Adding to 142203420 its reverse (24302241), we get a palindrome (166505661).

The spelling of 142203420 in words is "one hundred forty-two million, two hundred three thousand, four hundred twenty".