1231051042 has 32 divisors (see below), whose sum is σ = 2040369408. Its totient is φ = 553464576.

The previous prime is 1231051033. The next prime is 1231051061. The reversal of 1231051042 is 2401501321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482823 + ... + 485365.

It is an arithmetic number, because the mean of its divisors is an integer number (63761544).

Almost surely, 2^1231051042 is an apocalyptic number.

1231051042 is a deficient number, since it is larger than the sum of its proper divisors (809318366).

1231051042 is a wasteful number, since it uses less digits than its factorization.

1231051042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3034.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1231051042 is about 35086.3369703935. The cubic root of 1231051042 is about 1071.7463670257.

Adding to 1231051042 its reverse (2401501321), we get a palindrome (3632552363).

The spelling of 1231051042 in words is "one billion, two hundred thirty-one million, fifty-one thousand, forty-two".