149642253 has 12 divisors (see below), whose sum is σ = 216257340. Its totient is φ = 99711936.

The previous prime is 149642237. The next prime is 149642261. The reversal of 149642253 is 352246941.

It is a happy number.

149642253 is a `hidden beast` number, since 1 + 4 + 9 + 642 + 2 + 5 + 3 = 666.

149642253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 59259204 + 90383049 = 7698^2 + 9507^2 .

It is not a de Polignac number, because 149642253 - 2⁴ = 149642237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149642263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28825 + ... + 33617.

It is an arithmetic number, because the mean of its divisors is an integer number (18021445).

Almost surely, 2^149642253 is an apocalyptic number.

It is an amenable number.

149642253 is a deficient number, since it is larger than the sum of its proper divisors (66615087).

149642253 is a wasteful number, since it uses less digits than its factorization.

149642253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8268 (or 8265 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 149642253 is about 12232.8350352647. The cubic root of 149642253 is about 530.9065450988.

The spelling of 149642253 in words is "one hundred forty-nine million, six hundred forty-two thousand, two hundred fifty-three".