1242100131 has 8 divisors (see below), whose sum is σ = 1713241680. Its totient is φ = 799512672.

The previous prime is 1242100127. The next prime is 1242100141. The reversal of 1242100131 is 1310012421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1242100131 - 2² = 1242100127 is a prime.

It is a super-2 number, since 2×1242100131² = 3085625470860434322, 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 1242100131.

It is not an unprimeable number, because it can be changed into a prime (1242100141) by changing a digit.

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, 7138420 + ... + 7138593.

It is an arithmetic number, because the mean of its divisors is an integer number (214155210).

Almost surely, 2^1242100131 is an apocalyptic number.

1242100131 is a deficient number, since it is larger than the sum of its proper divisors (471141549).

1242100131 is a wasteful number, since it uses less digits than its factorization.

1242100131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14277045.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1242100131 is about 35243.4409642418. The cubic root of 1242100131 is about 1074.9432473374.

Adding to 1242100131 its reverse (1310012421), we get a palindrome (2552112552).

The spelling of 1242100131 in words is "one billion, two hundred forty-two million, one hundred thousand, one hundred thirty-one".