102151245 has 16 divisors (see below), whose sum is σ = 186791040. Its totient is φ = 46697664.

The previous prime is 102151241. The next prime is 102151267. The reversal of 102151245 is 542151201.

It is not a de Polignac number, because 102151245 - 2² = 102151241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102151241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486330 + ... + 486539.

It is an arithmetic number, because the mean of its divisors is an integer number (11674440).

Almost surely, 2^102151245 is an apocalyptic number.

102151245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102151245 is a deficient number, since it is larger than the sum of its proper divisors (84639795).

102151245 is an equidigital number, since it uses as much as digits as its factorization.

102151245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972884.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 102151245 is about 10106.9899079795. The cubic root of 102151245 is about 467.4636955041.

The spelling of 102151245 in words is "one hundred two million, one hundred fifty-one thousand, two hundred forty-five".