149542868 has 12 divisors (see below), whose sum is σ = 262270932. Its totient is φ = 74608320.

The previous prime is 149542859. The next prime is 149542871. The reversal of 149542868 is 868245941.

It can be written as a sum of positive squares in 2 ways, for example, as 107578384 + 41964484 = 10372^2 + 6478^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38705 + ... + 42392.

It is an arithmetic number, because the mean of its divisors is an integer number (21855911).

Almost surely, 2^149542868 is an apocalyptic number.

It is an amenable number.

149542868 is a deficient number, since it is larger than the sum of its proper divisors (112728064).

149542868 is a wasteful number, since it uses less digits than its factorization.

149542868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81562 (or 81560 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 149542868 is about 12228.7721378722. The cubic root of 149542868 is about 530.7889850930.

The spelling of 149542868 in words is "one hundred forty-nine million, five hundred forty-two thousand, eight hundred sixty-eight".