102442305451 has 4 divisors (see below), whose sum is σ = 102881972232. Its totient is φ = 102002638672.

The previous prime is 102442305443. The next prime is 102442305479. The reversal of 102442305451 is 154503244201.

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

It is a cyclic number.

It is not a de Polignac number, because 102442305451 - 2³ = 102442305443 is a prime.

It is a super-2 number, since 2×102442305451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102442305401) 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, 219833041 + ... + 219833506.

It is an arithmetic number, because the mean of its divisors is an integer number (25720493058).

Almost surely, 2^102442305451 is an apocalyptic number.

102442305451 is a deficient number, since it is larger than the sum of its proper divisors (439666781).

102442305451 is an equidigital number, since it uses as much as digits as its factorization.

102442305451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439666780.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 102442305451 its reverse (154503244201), we get a palindrome (256945549652).

The spelling of 102442305451 in words is "one hundred two billion, four hundred forty-two million, three hundred five thousand, four hundred fifty-one".