102499740 has 72 divisors (see below), whose sum is σ = 355336800. Its totient is φ = 23428224.

The previous prime is 102499739. The next prime is 102499741. The reversal of 102499740 is 47994201.

It is an interprime number because it is at equal distance from previous prime (102499739) and next prime (102499741).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 102499695 and 102499704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102499741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39415 + ... + 41934.

Almost surely, 2^102499740 is an apocalyptic number.

102499740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102499740 is an abundant number, since it is smaller than the sum of its proper divisors (252837060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102499740 is a wasteful number, since it uses less digits than its factorization.

102499740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81371 (or 81366 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 102499740 is about 10124.2155251654. The cubic root of 102499740 is about 467.9946854536.

The spelling of 102499740 in words is "one hundred two million, four hundred ninety-nine thousand, seven hundred forty".