1043400642 has 16 divisors (see below), whose sum is σ = 2105269920. Its totient is φ = 344722112.

The previous prime is 1043400641. The next prime is 1043400643. The reversal of 1043400642 is 2460043401.

It is an interprime number because it is at equal distance from previous prime (1043400641) and next prime (1043400643).

It is not an unprimeable number, because it can be changed into a prime (1043400641) 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, 768792 + ... + 770147.

It is an arithmetic number, because the mean of its divisors is an integer number (131579370).

Almost surely, 2^1043400642 is an apocalyptic number.

1043400642 is an abundant number, since it is smaller than the sum of its proper divisors (1061869278).

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

1043400642 is a wasteful number, since it uses less digits than its factorization.

1043400642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539057.

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

The square root of 1043400642 is about 32301.7126790516. The cubic root of 1043400642 is about 1014.2624948218.

The spelling of 1043400642 in words is "one billion, forty-three million, four hundred thousand, six hundred forty-two".