139520770 has 16 divisors (see below), whose sum is σ = 259239168. Its totient is φ = 54007920.

The previous prime is 139520753. The next prime is 139520809. The reversal of 139520770 is 77025931.

It is a super-2 number, since 2×139520770² = 38932090522785800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224724 + ... + 225343.

It is an arithmetic number, because the mean of its divisors is an integer number (16202448).

Almost surely, 2^139520770 is an apocalyptic number.

139520770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139520770 is a deficient number, since it is larger than the sum of its proper divisors (119718398).

139520770 is a wasteful number, since it uses less digits than its factorization.

139520770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450105.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 139520770 is about 11811.8910425046. The cubic root of 139520770 is about 518.6562569273.

The spelling of 139520770 in words is "one hundred thirty-nine million, five hundred twenty thousand, seven hundred seventy".