1242695800 has 24 divisors (see below), whose sum is σ = 2889268200. Its totient is φ = 497078240.

The previous prime is 1242695789. The next prime is 1242695807. The reversal of 1242695800 is 85962421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242695800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242695807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3106540 + ... + 3106939.

It is an arithmetic number, because the mean of its divisors is an integer number (120386175).

Almost surely, 2^1242695800 is an apocalyptic number.

1242695800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242695800 is an abundant number, since it is smaller than the sum of its proper divisors (1646572400).

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

1242695800 is a wasteful number, since it uses less digits than its factorization.

1242695800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6213495 (or 6213486 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 1242695800 is about 35251.8907294346. The cubic root of 1242695800 is about 1075.1150552895.

The spelling of 1242695800 in words is "one billion, two hundred forty-two million, six hundred ninety-five thousand, eight hundred".