142544402 has 48 divisors (see below), whose sum is σ = 288712512. Its totient is φ = 51255360.

The previous prime is 142544383. The next prime is 142544411. The reversal of 142544402 is 204445241.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23288 + ... + 28764.

It is an arithmetic number, because the mean of its divisors is an integer number (6014844).

Almost surely, 2^142544402 is an apocalyptic number.

142544402 is an abundant number, since it is smaller than the sum of its proper divisors (146168110).

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

142544402 is a wasteful number, since it uses less digits than its factorization.

142544402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523 (or 5510 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 142544402 is about 11939.1960365847. The cubic root of 142544402 is about 522.3762083969.

Adding to 142544402 its reverse (204445241), we get a palindrome (346989643).

The spelling of 142544402 in words is "one hundred forty-two million, five hundred forty-four thousand, four hundred two".