1242400700 has 18 divisors (see below), whose sum is σ = 2696009736. Its totient is φ = 496960240.

The previous prime is 1242400699. The next prime is 1242400717. The reversal of 1242400700 is 70042421.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6211904 + ... + 6212103.

Almost surely, 2^1242400700 is an apocalyptic number.

1242400700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242400700 is an abundant number, since it is smaller than the sum of its proper divisors (1453609036).

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

1242400700 is a wasteful number, since it uses less digits than its factorization.

1242400700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12424021 (or 12424014 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1242400700 is about 35247.7048898223. The cubic root of 1242400700 is about 1075.0299468852.

The spelling of 1242400700 in words is "one billion, two hundred forty-two million, four hundred thousand, seven hundred".