1043042640 has 80 divisors (see below), whose sum is σ = 3374034048. Its totient is φ = 266050048.

The previous prime is 1043042621. The next prime is 1043042641. The reversal of 1043042640 is 462403401.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1043042640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043042641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88959 + ... + 99998.

Almost surely, 2^1043042640 is an apocalyptic number.

1043042640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043042640 is an abundant number, since it is smaller than the sum of its proper divisors (2330991408).

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

1043042640 is a wasteful number, since it uses less digits than its factorization.

1043042640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188996 (or 188990 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1043042640 is about 32296.1706708396. The cubic root of 1043042640 is about 1014.1464800895.

The spelling of 1043042640 in words is "one billion, forty-three million, forty-two thousand, six hundred forty".