1242533631 has 8 divisors (see below), whose sum is σ = 1656882864. Its totient is φ = 828270080.

The previous prime is 1242533629. The next prime is 1242533707. The reversal of 1242533631 is 1363352421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242533631 - 2¹ = 1242533629 is a prime.

It is a super-2 number, since 2×1242533631² = 3087779648332088322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242533731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30175 + ... + 58271.

It is an arithmetic number, because the mean of its divisors is an integer number (207110358).

Almost surely, 2^1242533631 is an apocalyptic number.

1242533631 is a deficient number, since it is larger than the sum of its proper divisors (414349233).

1242533631 is a wasteful number, since it uses less digits than its factorization.

1242533631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42841.

The product of its digits is 12960, while the sum is 30.

The square root of 1242533631 is about 35249.5905082598. The cubic root of 1242533631 is about 1075.0682865582.

It can be divided in two parts, 12425 and 33631, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 1242533631 in words is "one billion, two hundred forty-two million, five hundred thirty-three thousand, six hundred thirty-one".