1280042084 has 48 divisors (see below), whose sum is σ = 2446221120. Its totient is φ = 583977600.

The previous prime is 1280042083. The next prime is 1280042087. The reversal of 1280042084 is 4802400821.

It is a super-2 number, since 2×1280042084² = 3277015473622126112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1280042083) 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, 281759 + ... + 286265.

It is an arithmetic number, because the mean of its divisors is an integer number (50962940).

Almost surely, 2^1280042084 is an apocalyptic number.

It is an amenable number.

1280042084 is a deficient number, since it is larger than the sum of its proper divisors (1166179036).

1280042084 is a wasteful number, since it uses less digits than its factorization.

1280042084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668 (or 4666 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 29.

The square root of 1280042084 is about 35777.6757769422. The cubic root of 1280042084 is about 1085.7789458358.

The spelling of 1280042084 in words is "one billion, two hundred eighty million, forty-two thousand, eighty-four".