102540451 has 16 divisors (see below), whose sum is σ = 112992768. Its totient is φ = 92476800.

The previous prime is 102540443. The next prime is 102540461. The reversal of 102540451 is 154045201.

It is not a de Polignac number, because 102540451 - 2³ = 102540443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102540421) 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, 151125 + ... + 151801.

It is an arithmetic number, because the mean of its divisors is an integer number (7062048).

Almost surely, 2^102540451 is an apocalyptic number.

102540451 is a deficient number, since it is larger than the sum of its proper divisors (10452317).

102540451 is a wasteful number, since it uses less digits than its factorization.

102540451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 102540451 is about 10126.2259010946. The cubic root of 102540451 is about 468.0566368620.

Adding to 102540451 its reverse (154045201), we get a palindrome (256585652).

The spelling of 102540451 in words is "one hundred two million, five hundred forty thousand, four hundred fifty-one".