149974452 has 18 divisors (see below), whose sum is σ = 379102178. Its totient is φ = 49991472.

The previous prime is 149974439. The next prime is 149974453. The reversal of 149974452 is 254479941.

149974452 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 only one way, i.e., 92275236 + 57699216 = 9606^2 + 7596^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 149974398 and 149974407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149974453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2082943 + ... + 2083014.

Almost surely, 2^149974452 is an apocalyptic number.

149974452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149974452 is an abundant number, since it is smaller than the sum of its proper divisors (229127726).

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

149974452 is a wasteful number, since it uses less digits than its factorization.

149974452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4165967 (or 4165962 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 149974452 is about 12246.4056767690. The cubic root of 149974452 is about 531.2991175440.

It can be divided in two parts, 149974 and 452, that added together give a triangular number (150426 = T₅₄₈).

The spelling of 149974452 in words is "one hundred forty-nine million, nine hundred seventy-four thousand, four hundred fifty-two".