1242079031 has 8 divisors (see below), whose sum is σ = 1267672320. Its totient is φ = 1216693368.

The previous prime is 1242079021. The next prime is 1242079043. The reversal of 1242079031 is 1309702421.

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 1242079031 - 2²² = 1237884727 is a prime.

It is a super-2 number, since 2×1242079031² = 3085520638499797922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1242078985 and 1242079003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242079021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39791 + ... + 63776.

It is an arithmetic number, because the mean of its divisors is an integer number (158459040).

Almost surely, 2^1242079031 is an apocalyptic number.

1242079031 is a deficient number, since it is larger than the sum of its proper divisors (25593289).

1242079031 is a wasteful number, since it uses less digits than its factorization.

1242079031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103813.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 1242079031 is about 35243.1416164904. The cubic root of 1242079031 is about 1074.9371604876.

The spelling of 1242079031 in words is "one billion, two hundred forty-two million, seventy-nine thousand, thirty-one".