139824157 has 4 divisors (see below), whose sum is σ = 152535456. Its totient is φ = 127112860.

The previous prime is 139824151. The next prime is 139824169. The reversal of 139824157 is 751428931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139824157 - 2³ = 139824149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139824151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6355633 + ... + 6355654.

It is an arithmetic number, because the mean of its divisors is an integer number (38133864).

Almost surely, 2^139824157 is an apocalyptic number.

It is an amenable number.

139824157 is a deficient number, since it is larger than the sum of its proper divisors (12711299).

139824157 is a wasteful number, since it uses less digits than its factorization.

139824157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12711298.

The product of its digits is 60480, while the sum is 40.

The square root of 139824157 is about 11824.7265084652. The cubic root of 139824157 is about 519.0319229748.

The spelling of 139824157 in words is "one hundred thirty-nine million, eight hundred twenty-four thousand, one hundred fifty-seven".