139225210 has 32 divisors (see below), whose sum is σ = 263088000. Its totient is φ = 52945728.

The previous prime is 139225199. The next prime is 139225211. The reversal of 139225210 is 12522931.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (139225211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38041 + ... + 41539.

It is an arithmetic number, because the mean of its divisors is an integer number (8221500).

Almost surely, 2^139225210 is an apocalyptic number.

139225210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139225210 is a deficient number, since it is larger than the sum of its proper divisors (123862790).

139225210 is a wasteful number, since it uses less digits than its factorization.

139225210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3702.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 139225210 is about 11799.3732884421. The cubic root of 139225210 is about 518.2897585280.

The spelling of 139225210 in words is "one hundred thirty-nine million, two hundred twenty-five thousand, two hundred ten".