149120731 has 8 divisors (see below), whose sum is σ = 153332928. Its totient is φ = 144936000.

The previous prime is 149120717. The next prime is 149120771. The reversal of 149120731 is 137021941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149120731 - 2¹⁵ = 149087963 is a prime.

It is a super-2 number, since 2×149120731² = 44473984827948722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149120731.

It is not an unprimeable number, because it can be changed into a prime (149120701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4401 + ... + 17821.

It is an arithmetic number, because the mean of its divisors is an integer number (19166616).

Almost surely, 2^149120731 is an apocalyptic number.

149120731 is a deficient number, since it is larger than the sum of its proper divisors (4212197).

149120731 is a wasteful number, since it uses less digits than its factorization.

149120731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13733.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 149120731 is about 12211.4999488187. The cubic root of 149120731 is about 530.2890686061.

It can be divided in two parts, 1491 and 20731, that added together give a palindrome (22222).

The spelling of 149120731 in words is "one hundred forty-nine million, one hundred twenty thousand, seven hundred thirty-one".