1292270139 has 8 divisors (see below), whose sum is σ = 1914474320. Its totient is φ = 861513408.

The previous prime is 1292270093. The next prime is 1292270171. The reversal of 1292270139 is 9310722921.

1292270139 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1292270139 - 2¹⁶ = 1292204603 is a prime.

It is a super-2 number, since 2×1292270139² = 3339924224302158642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1292270179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23930902 + ... + 23930955.

It is an arithmetic number, because the mean of its divisors is an integer number (239309290).

Almost surely, 2^1292270139 is an apocalyptic number.

1292270139 is a deficient number, since it is larger than the sum of its proper divisors (622204181).

1292270139 is an equidigital number, since it uses as much as digits as its factorization.

1292270139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47861866 (or 47861860 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1292270139 is about 35948.1590488303. The cubic root of 1292270139 is about 1089.2254236646.

The spelling of 1292270139 in words is "one billion, two hundred ninety-two million, two hundred seventy thousand, one hundred thirty-nine".