1242259984 has 40 divisors (see below), whose sum is σ = 2817819648. Its totient is φ = 519409920.

The previous prime is 1242259973. The next prime is 1242260011. The reversal of 1242259984 is 4899522421.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130672 + ... + 139855.

Almost surely, 2^1242259984 is an apocalyptic number.

1242259984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1242259984 is an abundant number, since it is smaller than the sum of its proper divisors (1575559664).

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

1242259984 is a wasteful number, since it uses less digits than its factorization.

1242259984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270583 (or 270577 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 1242259984 is about 35245.7087317024. The cubic root of 1242259984 is about 1074.9893588995.

The spelling of 1242259984 in words is "one billion, two hundred forty-two million, two hundred fifty-nine thousand, nine hundred eighty-four".