102542451 has 16 divisors (see below), whose sum is σ = 153965568. Its totient is φ = 60141600.

The previous prime is 102542423. The next prime is 102542471. The reversal of 102542451 is 154245201.

It is not a de Polignac number, because 102542451 - 2²⁵ = 68988019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102542471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49096 + ... + 51141.

It is an arithmetic number, because the mean of its divisors is an integer number (9622848).

Almost surely, 2^102542451 is an apocalyptic number.

102542451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102542451 is a deficient number, since it is larger than the sum of its proper divisors (51423117).

102542451 is a wasteful number, since it uses less digits than its factorization.

102542451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100282.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 102542451 is about 10126.3246540885. The cubic root of 102542451 is about 468.0596799121.

Adding to 102542451 its reverse (154245201), we get a palindrome (256787652).

The spelling of 102542451 in words is "one hundred two million, five hundred forty-two thousand, four hundred fifty-one".