1239027140 has 108 divisors (see below), whose sum is σ = 2929525956. Its totient is φ = 437577984.

The previous prime is 1239027137. The next prime is 1239027169. The reversal of 1239027140 is 417209321.

It can be written as a sum of positive squares in 6 ways, for example, as 43665664 + 1195361476 = 6608^2 + 34574^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21000431 + ... + 21000489.

Almost surely, 2^1239027140 is an apocalyptic number.

1239027140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1239027140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464762978).

1239027140 is an abundant number, since it is smaller than the sum of its proper divisors (1690498816).

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

1239027140 is a wasteful number, since it uses less digits than its factorization.

1239027140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1239027140 is about 35199.8173290715. The cubic root of 1239027140 is about 1074.0560352312.

The spelling of 1239027140 in words is "one billion, two hundred thirty-nine million, twenty-seven thousand, one hundred forty".