142049820 has 96 divisors (see below), whose sum is σ = 437342976. Its totient is φ = 34163200.

The previous prime is 142049819. The next prime is 142049837. The reversal of 142049820 is 28940241.

142049820 is digitally balanced in base 3, 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 (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89635 + ... + 91205.

It is an arithmetic number, because the mean of its divisors is an integer number (4555656).

Almost surely, 2^142049820 is an apocalyptic number.

142049820 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 142049820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218671488).

142049820 is an abundant number, since it is smaller than the sum of its proper divisors (295293156).

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

142049820 is a wasteful number, since it uses less digits than its factorization.

142049820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 142049820 is about 11918.4655052570. The cubic root of 142049820 is about 521.7713506612.

The spelling of 142049820 in words is "one hundred forty-two million, forty-nine thousand, eight hundred twenty".