1021131042 has 8 divisors (see below), whose sum is σ = 2042262096. Its totient is φ = 340377012.

The previous prime is 1021131037. The next prime is 1021131043. The reversal of 1021131042 is 2401311201.

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

1021131042 is an admirable number.

It is a super-3 number, since 3×1021131042³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021131043) 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, 85094248 + ... + 85094259.

It is an arithmetic number, because the mean of its divisors is an integer number (255282762).

Almost surely, 2^1021131042 is an apocalyptic number.

1021131042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021131042 is a wasteful number, since it uses less digits than its factorization.

1021131042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170188512.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1021131042 is about 31955.1410887200. The cubic root of 1021131042 is about 1006.9946415848.

Adding to 1021131042 its reverse (2401311201), we get a palindrome (3422442243).

The spelling of 1021131042 in words is "one billion, twenty-one million, one hundred thirty-one thousand, forty-two".