1242143752 has 16 divisors (see below), whose sum is σ = 2383183440. Its totient is φ = 606628176.

The previous prime is 1242143741. The next prime is 1242143767. The reversal of 1242143752 is 2573412421.

It is a happy number.

It is a super-2 number, since 2×1242143752² = 3085842201265275008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805098 + ... + 1805785.

It is an arithmetic number, because the mean of its divisors is an integer number (148948965).

Almost surely, 2^1242143752 is an apocalyptic number.

It is an amenable number.

1242143752 is a deficient number, since it is larger than the sum of its proper divisors (1141039688).

1242143752 is a wasteful number, since it uses less digits than its factorization.

1242143752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610932 (or 3610928 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 1242143752 is about 35244.0598115484. The cubic root of 1242143752 is about 1074.9558307434.

The spelling of 1242143752 in words is "one billion, two hundred forty-two million, one hundred forty-three thousand, seven hundred fifty-two".