1239064452 has 120 divisors (see below), whose sum is σ = 3342411072. Its totient is φ = 400075200.

The previous prime is 1239064427. The next prime is 1239064459. The reversal of 1239064452 is 2544609321.

It is a happy number.

1239064452 is a `hidden beast` number, since 1 + 2 + 3 + 9 + 0 + 644 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1239064459) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1402803 + ... + 1403685.

Almost surely, 2^1239064452 is an apocalyptic number.

1239064452 is a gapful number since it is divisible by the number (12) 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 1239064452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1671205536).

1239064452 is an abundant number, since it is smaller than the sum of its proper divisors (2103346620).

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

1239064452 is a wasteful number, since it uses less digits than its factorization.

1239064452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1239064452 is about 35200.3473278319. The cubic root of 1239064452 is about 1074.0668164791.

The spelling of 1239064452 in words is "one billion, two hundred thirty-nine million, sixty-four thousand, four hundred fifty-two".