1240641792 has 144 divisors (see below), whose sum is σ = 3951297280. Its totient is φ = 381708288.

The previous prime is 1240641769. The next prime is 1240641811. The reversal of 1240641792 is 2971460421.

It is a happy number.

1240641792 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 641 + 7 + 9 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82953 + ... + 96759.

Almost surely, 2^1240641792 is an apocalyptic number.

1240641792 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 1240641792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975648640).

1240641792 is an abundant number, since it is smaller than the sum of its proper divisors (2710655488).

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

1240641792 is a wasteful number, since it uses less digits than its factorization.

1240641792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13845 (or 13825 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 1240641792 is about 35222.7453785193. The cubic root of 1240641792 is about 1074.5223887351.

The spelling of 1240641792 in words is "one billion, two hundred forty million, six hundred forty-one thousand, seven hundred ninety-two".