102942609 has 32 divisors (see below), whose sum is σ = 173322240. Its totient is φ = 52790400.

The previous prime is 102942607. The next prime is 102942611. The reversal of 102942609 is 906249201.

It is an interprime number because it is at equal distance from previous prime (102942607) and next prime (102942611).

It is not a de Polignac number, because 102942609 - 2¹ = 102942607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 102942609.

It is not an unprimeable number, because it can be changed into a prime (102942601) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15429 + ... + 21069.

It is an arithmetic number, because the mean of its divisors is an integer number (5416320).

Almost surely, 2^102942609 is an apocalyptic number.

It is an amenable number.

102942609 is a deficient number, since it is larger than the sum of its proper divisors (70379631).

102942609 is a wasteful number, since it uses less digits than its factorization.

102942609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5741.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 102942609 is about 10146.0637194924. The cubic root of 102942609 is about 468.6677361061.

The spelling of 102942609 in words is "one hundred two million, nine hundred forty-two thousand, six hundred nine".