102405552 has 40 divisors (see below), whose sum is σ = 280111536. Its totient is φ = 32126976.

The previous prime is 102405539. The next prime is 102405553. The reversal of 102405552 is 255504201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (102405553) 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, 61933 + ... + 63564.

Almost surely, 2^102405552 is an apocalyptic number.

102405552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102405552 is an abundant number, since it is smaller than the sum of its proper divisors (177705984).

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

102405552 is a wasteful number, since it uses less digits than its factorization.

102405552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125525 (or 125519 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 102405552 is about 10119.5628364075. The cubic root of 102405552 is about 467.8512932459.

Adding to 102405552 its reverse (255504201), we get a palindrome (357909753).

The spelling of 102405552 in words is "one hundred two million, four hundred five thousand, five hundred fifty-two".