139534530 has 32 divisors (see below), whose sum is σ = 338205888. Its totient is φ = 36840000.

The previous prime is 139534517. The next prime is 139534543. The reversal of 139534530 is 35435931.

It is an interprime number because it is at equal distance from previous prime (139534517) and next prime (139534543).

It is a junction number, because it is equal to n+sod(n) for n = 139534491 and 139534500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19996 + ... + 26055.

It is an arithmetic number, because the mean of its divisors is an integer number (10568934).

Almost surely, 2^139534530 is an apocalyptic number.

139534530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139534530 is an abundant number, since it is smaller than the sum of its proper divisors (198671358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139534530 is a wasteful number, since it uses less digits than its factorization.

139534530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46162.

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 139534530 is about 11812.4734920337. The cubic root of 139534530 is about 518.6733068989.

The spelling of 139534530 in words is "one hundred thirty-nine million, five hundred thirty-four thousand, five hundred thirty".