102440534 has 16 divisors (see below), whose sum is σ = 179697408. Its totient is φ = 42881832.

The previous prime is 102440501. The next prime is 102440537. The reversal of 102440534 is 435044201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102440537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84482 + ... + 85685.

It is an arithmetic number, because the mean of its divisors is an integer number (11231088).

Almost surely, 2^102440534 is an apocalyptic number.

102440534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

102440534 is a deficient number, since it is larger than the sum of its proper divisors (77256874).

102440534 is a wasteful number, since it uses less digits than its factorization.

102440534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170219.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 102440534 is about 10121.2911231720. The cubic root of 102440534 is about 467.9045602494.

Adding to 102440534 its reverse (435044201), we get a palindrome (537484735).

The spelling of 102440534 in words is "one hundred two million, four hundred forty thousand, five hundred thirty-four".