149574321 has 24 divisors (see below), whose sum is σ = 237071016. Its totient is φ = 90305280.

The previous prime is 149574319. The next prime is 149574331. The reversal of 149574321 is 123475941.

149574321 = 2386² + 2387² + ... + 2411².

It can be written as a sum of positive squares in 4 ways, for example, as 5934096 + 143640225 = 2436^2 + 11985^2 .

It is not a de Polignac number, because 149574321 - 2¹ = 149574319 is a prime.

It is a super-2 number, since 2×149574321² = 44744955005222082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149574301) 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 23 ways as a sum of consecutive naturals, for example, 5860 + ... + 18261.

It is an arithmetic number, because the mean of its divisors is an integer number (9877959).

Almost surely, 2^149574321 is an apocalyptic number.

It is an amenable number.

149574321 is a deficient number, since it is larger than the sum of its proper divisors (87496695).

149574321 is a wasteful number, since it uses less digits than its factorization.

149574321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24193 (or 24190 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 149574321 is about 12230.0580947108. The cubic root of 149574321 is about 530.8261956843.

The spelling of 149574321 in words is "one hundred forty-nine million, five hundred seventy-four thousand, three hundred twenty-one".