1231202042 has 8 divisors (see below), whose sum is σ = 2110632096. Its totient is φ = 527658012.

The previous prime is 1231202041. The next prime is 1231202099. The reversal of 1231202042 is 2402021321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1231202042.

It is not an unprimeable number, because it can be changed into a prime (1231202041) 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, 43971488 + ... + 43971515.

It is an arithmetic number, because the mean of its divisors is an integer number (263829012).

Almost surely, 2^1231202042 is an apocalyptic number.

1231202042 is a deficient number, since it is larger than the sum of its proper divisors (879430054).

1231202042 is an equidigital number, since it uses as much as digits as its factorization.

1231202042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87943012.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1231202042 is about 35088.4887391862. The cubic root of 1231202042 is about 1071.7901851614.

Adding to 1231202042 its reverse (2402021321), we get a palindrome (3633223363).

The spelling of 1231202042 in words is "one billion, two hundred thirty-one million, two hundred two thousand, forty-two".