1242011231 has 8 divisors (see below), whose sum is σ = 1253493024. Its totient is φ = 1230577920.

The previous prime is 1242011213. The next prime is 1242011233. The reversal of 1242011231 is 1321102421.

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 1242011231 - 2¹⁰ = 1242010207 is a prime.

It is a super-2 number, since 2×1242011231² = 3085183795860270722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242011233) 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, 40391 + ... + 64151.

It is an arithmetic number, because the mean of its divisors is an integer number (156686628).

Almost surely, 2^1242011231 is an apocalyptic number.

1242011231 is a deficient number, since it is larger than the sum of its proper divisors (11481793).

1242011231 is a wasteful number, since it uses less digits than its factorization.

1242011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24241.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1242011231 is about 35242.1797140869. The cubic root of 1242011231 is about 1074.9176013281.

Adding to 1242011231 its reverse (1321102421), we get a palindrome (2563113652).

The spelling of 1242011231 in words is "one billion, two hundred forty-two million, eleven thousand, two hundred thirty-one".