1042020664 has 8 divisors (see below), whose sum is σ = 1953788760. Its totient is φ = 521010328.

The previous prime is 1042020659. The next prime is 1042020671. The reversal of 1042020664 is 4660202401.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65126284 + ... + 65126299.

It is an arithmetic number, because the mean of its divisors is an integer number (244223595).

Almost surely, 2^1042020664 is an apocalyptic number.

It is an amenable number.

1042020664 is a deficient number, since it is larger than the sum of its proper divisors (911768096).

1042020664 is a wasteful number, since it uses less digits than its factorization.

1042020664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130252589 (or 130252585 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1042020664 is about 32280.3448556548. The cubic root of 1042020664 is about 1013.8151506987.

The spelling of 1042020664 in words is "one billion, forty-two million, twenty thousand, six hundred sixty-four".