149972 has 6 divisors (see below), whose sum is σ = 262458. Its totient is φ = 74984.

The previous prime is 149971. The next prime is 149993. The reversal of 149972 is 279941.

It can be written as a sum of positive squares in only one way, i.e., 111556 + 38416 = 334^2 + 196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18743 + ... + 18750.

It is an arithmetic number, because the mean of its divisors is an integer number (43743).

2¹⁴⁹⁹⁷² is an apocalyptic number.

It is an amenable number.

149972 is a deficient number, since it is larger than the sum of its proper divisors (112486).

149972 is a wasteful number, since it uses less digits than its factorization.

149972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37497 (or 37495 counting only the distinct ones).

The product of its digits is 4536, while the sum is 32.

The square root of 149972 is about 387.2621850891. The cubic root of 149972 is about 53.1296222045.

The spelling of 149972 in words is "one hundred forty-nine thousand, nine hundred seventy-two".