1242143652 has 24 divisors (see below), whose sum is σ = 2927034432. Its totient is φ = 409948000.

The previous prime is 1242143647. The next prime is 1242143701. The reversal of 1242143652 is 2563412421.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511224 + ... + 513647.

It is an arithmetic number, because the mean of its divisors is an integer number (121959768).

Almost surely, 2^1242143652 is an apocalyptic number.

1242143652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1242143652 is an abundant number, since it is smaller than the sum of its proper divisors (1684890780).

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

1242143652 is a wasteful number, since it uses less digits than its factorization.

1242143652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024979 (or 1024977 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 1242143652 is about 35244.0583928696. The cubic root of 1242143652 is about 1074.9558018966.

The spelling of 1242143652 in words is "one billion, two hundred forty-two million, one hundred forty-three thousand, six hundred fifty-two".