149901273 has 10 divisors (see below), whose sum is σ = 223926714. Its totient is φ = 99934128.

The previous prime is 149901259. The next prime is 149901287. The reversal of 149901273 is 372109941.

It is an interprime number because it is at equal distance from previous prime (149901259) and next prime (149901287).

It can be written as a sum of positive squares in only one way, i.e., 83119689 + 66781584 = 9117^2 + 8172^2 .

It is not a de Polignac number, because 149901273 - 2⁶ = 149901209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149901293) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 925236 + ... + 925397.

Almost surely, 2^149901273 is an apocalyptic number.

It is an amenable number.

149901273 is a deficient number, since it is larger than the sum of its proper divisors (74025441).

149901273 is an equidigital number, since it uses as much as digits as its factorization.

149901273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850645 (or 1850636 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 149901273 is about 12243.4175375995. The cubic root of 149901273 is about 531.2126889044.

The spelling of 149901273 in words is "one hundred forty-nine million, nine hundred one thousand, two hundred seventy-three".