149656423 has 16 divisors (see below), whose sum is σ = 188974080. Its totient is φ = 115479936.

The previous prime is 149656373. The next prime is 149656477. The reversal of 149656423 is 324656941.

It is a cyclic number.

It is not a de Polignac number, because 149656423 - 2¹⁷ = 149525351 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 (149656723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24603 + ... + 30076.

It is an arithmetic number, because the mean of its divisors is an integer number (11810880).

Almost surely, 2^149656423 is an apocalyptic number.

149656423 is a deficient number, since it is larger than the sum of its proper divisors (39317657).

149656423 is a wasteful number, since it uses less digits than its factorization.

149656423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54726.

The product of its digits is 155520, while the sum is 40.

The square root of 149656423 is about 12233.4142004593. The cubic root of 149656423 is about 530.9233021937.

The spelling of 149656423 in words is "one hundred forty-nine million, six hundred fifty-six thousand, four hundred twenty-three".