139148451 has 24 divisors (see below), whose sum is σ = 229188960. Its totient is φ = 80591616.

The previous prime is 139148441. The next prime is 139148497. The reversal of 139148451 is 154841931.

It is not a de Polignac number, because 139148451 - 2⁷ = 139148323 is a prime.

It is a super-3 number, since 3×139148451³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (139148431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32991 + ... + 36968.

It is an arithmetic number, because the mean of its divisors is an integer number (9549540).

Almost surely, 2^139148451 is an apocalyptic number.

139148451 is a deficient number, since it is larger than the sum of its proper divisors (90040509).

139148451 is a wasteful number, since it uses less digits than its factorization.

139148451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69995 (or 69992 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 139148451 is about 11796.1201672414. The cubic root of 139148451 is about 518.1944914973.

The spelling of 139148451 in words is "one hundred thirty-nine million, one hundred forty-eight thousand, four hundred fifty-one".