149290452 has 42 divisors (see below), whose sum is σ = 391715898. Its totient is φ = 49762512.

The previous prime is 149290441. The next prime is 149290457. The reversal of 149290452 is 254092941.

It can be written as a sum of positive squares in only one way, i.e., 148937616 + 352836 = 12204^2 + 594^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149290457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 22683 + ... + 28514.

It is an arithmetic number, because the mean of its divisors is an integer number (9326569).

Almost surely, 2^149290452 is an apocalyptic number.

149290452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149290452 is an abundant number, since it is smaller than the sum of its proper divisors (242425446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149290452 is an equidigital number, since it uses as much as digits as its factorization.

149290452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51219 (or 51202 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 149290452 is about 12218.4472008517. The cubic root of 149290452 is about 530.4901742632.

The spelling of 149290452 in words is "one hundred forty-nine million, two hundred ninety thousand, four hundred fifty-two".