142400120 has 16 divisors (see below), whose sum is σ = 320400360. Its totient is φ = 56960032.

The previous prime is 142400113. The next prime is 142400123. The reversal of 142400120 is 21004241.

It is a junction number, because it is equal to n+sod(n) for n = 142400095 and 142400104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142400123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1779962 + ... + 1780041.

Almost surely, 2^142400120 is an apocalyptic number.

142400120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142400120 is an abundant number, since it is smaller than the sum of its proper divisors (178000240).

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

142400120 is a wasteful number, since it uses less digits than its factorization.

142400120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560014 (or 3560010 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 142400120 is about 11933.1521401514. The cubic root of 142400120 is about 522.1999009288.

Adding to 142400120 its reverse (21004241), we get a palindrome (163404361).

The spelling of 142400120 in words is "one hundred forty-two million, four hundred thousand, one hundred twenty".