1021142442 has 16 divisors (see below), whose sum is σ = 2045736000. Its totient is φ = 339805632.

The previous prime is 1021142429. The next prime is 1021142453. The reversal of 1021142442 is 2442411201.

It is a super-3 number, since 3×1021142442³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139942 + ... + 147057.

It is an arithmetic number, because the mean of its divisors is an integer number (127858500).

Almost surely, 2^1021142442 is an apocalyptic number.

1021142442 is an abundant number, since it is smaller than the sum of its proper divisors (1024593558).

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

1021142442 is a wasteful number, since it uses less digits than its factorization.

1021142442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287597.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1021142442 is about 31955.3194632756. The cubic root of 1021142442 is about 1006.9983889642.

Adding to 1021142442 its reverse (2442411201), we get a palindrome (3463553643).

The spelling of 1021142442 in words is "one billion, twenty-one million, one hundred forty-two thousand, four hundred forty-two".