139570 has 16 divisors (see below), whose sum is σ = 266328. Its totient is φ = 52480.

The previous prime is 139547. The next prime is 139571. The reversal of 139570 is 75931.

139570 = T₁₀₈ + T₁₀₉ + ... + T₁₂₇.

It can be written as a sum of positive squares in 4 ways, for example, as 114921 + 24649 = 339^2 + 157^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139571) by changing a digit.

139570 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241 + ... + 580.

2¹³⁹⁵⁷⁰ is an apocalyptic number.

139570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139570 is a deficient number, since it is larger than the sum of its proper divisors (126758).

139570 is a wasteful number, since it uses less digits than its factorization.

139570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 139570 is about 373.5906851087. The cubic root of 139570 is about 51.8717252493.

The spelling of 139570 in words is "one hundred thirty-nine thousand, five hundred seventy".