1020642344 has 32 divisors (see below), whose sum is σ = 1928448000. Its totient is φ = 506404800.

The previous prime is 1020642341. The next prime is 1020642409. The reversal of 1020642344 is 4432460201.

It is not an unprimeable number, because it can be changed into a prime (1020642341) 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, 886169 + ... + 887319.

It is an arithmetic number, because the mean of its divisors is an integer number (60264000).

Almost surely, 2^1020642344 is an apocalyptic number.

It is an amenable number.

1020642344 is a deficient number, since it is larger than the sum of its proper divisors (907805656).

1020642344 is a wasteful number, since it uses less digits than its factorization.

1020642344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1913 (or 1909 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1020642344 is about 31947.4935480078. The cubic root of 1020642344 is about 1006.8339717737.

The spelling of 1020642344 in words is "one billion, twenty million, six hundred forty-two thousand, three hundred forty-four".