1242120524 has 12 divisors (see below), whose sum is σ = 2243830848. Its totient is φ = 601026000.

The previous prime is 1242120511. The next prime is 1242120527. The reversal of 1242120524 is 4250212421.

It is a super-2 number, since 2×1242120524² = 3085726792284069152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1242120524.

It is not an unprimeable number, because it can be changed into a prime (1242120527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5008427 + ... + 5008674.

It is an arithmetic number, because the mean of its divisors is an integer number (186985904).

Almost surely, 2^1242120524 is an apocalyptic number.

It is an amenable number.

1242120524 is a deficient number, since it is larger than the sum of its proper divisors (1001710324).

1242120524 is a wasteful number, since it uses less digits than its factorization.

1242120524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10017136 (or 10017134 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1242120524 is about 35243.7302792993. The cubic root of 1242120524 is about 1074.9491301690.

Adding to 1242120524 its reverse (4250212421), we get a palindrome (5492332945).

The spelling of 1242120524 in words is "one billion, two hundred forty-two million, one hundred twenty thousand, five hundred twenty-four".