102245040 has 60 divisors (see below), whose sum is σ = 343375344. Its totient is φ = 27265152.

The previous prime is 102245029. The next prime is 102245057. The reversal of 102245040 is 40542201.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70284 + ... + 71723.

Almost surely, 2^102245040 is an apocalyptic number.

102245040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102245040 is an abundant number, since it is smaller than the sum of its proper divisors (241130304).

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

102245040 is a wasteful number, since it uses less digits than its factorization.

102245040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142026 (or 142017 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 102245040 is about 10111.6289488885. The cubic root of 102245040 is about 467.6067263745.

Adding to 102245040 its reverse (40542201), we get a palindrome (142787241).

The spelling of 102245040 in words is "one hundred two million, two hundred forty-five thousand, forty".