139222530 has 32 divisors (see below), whose sum is σ = 371260800. Its totient is φ = 37125936.

The previous prime is 139222529. The next prime is 139222543. The reversal of 139222530 is 35222931.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 139222494 and 139222503.

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, 257550 + ... + 258089.

It is an arithmetic number, because the mean of its divisors is an integer number (11601900).

Almost surely, 2^139222530 is an apocalyptic number.

139222530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139222530 is an abundant number, since it is smaller than the sum of its proper divisors (232038270).

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

139222530 is a wasteful number, since it uses less digits than its factorization.

139222530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515655 (or 515649 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 139222530 is about 11799.2597225419. The cubic root of 139222530 is about 518.2864329199.

The spelling of 139222530 in words is "one hundred thirty-nine million, two hundred twenty-two thousand, five hundred thirty".