102158407 has 4 divisors (see below), whose sum is σ = 110016760. Its totient is φ = 94300056.

The previous prime is 102158377. The next prime is 102158417. The reversal of 102158407 is 704851201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102158407 - 2¹¹ = 102156359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102158417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3929157 + ... + 3929182.

It is an arithmetic number, because the mean of its divisors is an integer number (27504190).

Almost surely, 2^102158407 is an apocalyptic number.

102158407 is a deficient number, since it is larger than the sum of its proper divisors (7858353).

102158407 is an equidigital number, since it uses as much as digits as its factorization.

102158407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858352.

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 102158407 is about 10107.3442110180. The cubic root of 102158407 is about 467.4746201441.

The spelling of 102158407 in words is "one hundred two million, one hundred fifty-eight thousand, four hundred seven".