102162442 has 4 divisors (see below), whose sum is σ = 153243666. Its totient is φ = 51081220.

The previous prime is 102162433. The next prime is 102162451. The reversal of 102162442 is 244261201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (102162433) and next prime (102162451).

It can be written as a sum of positive squares in only one way, i.e., 97831881 + 4330561 = 9891^2 + 2081^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25540609 + ... + 25540612.

Almost surely, 2^102162442 is an apocalyptic number.

102162442 is a deficient number, since it is larger than the sum of its proper divisors (51081224).

102162442 is an equidigital number, since it uses as much as digits as its factorization.

102162442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51081223.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 102162442 is about 10107.5438163779. The cubic root of 102162442 is about 467.4807747535.

The spelling of 102162442 in words is "one hundred two million, one hundred sixty-two thousand, four hundred forty-two".