139252054 has 8 divisors (see below), whose sum is σ = 209245608. Its totient is φ = 69503520.

The previous prime is 139252037. The next prime is 139252073. The reversal of 139252054 is 450252931.

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

It is a super-2 number, since 2×139252054² = 38782269086437832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59827 + ... + 62110.

It is an arithmetic number, because the mean of its divisors is an integer number (26155701).

Almost surely, 2^139252054 is an apocalyptic number.

139252054 is a deficient number, since it is larger than the sum of its proper divisors (69993554).

139252054 is a wasteful number, since it uses less digits than its factorization.

139252054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122510.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 139252054 is about 11800.5107516582. The cubic root of 139252054 is about 518.3230668544.

The spelling of 139252054 in words is "one hundred thirty-nine million, two hundred fifty-two thousand, fifty-four".