1042142021131 has 4 divisors (see below), whose sum is σ = 1042144697952. Its totient is φ = 1042139344312.

The previous prime is 1042142021101. The next prime is 1042142021177. The reversal of 1042142021131 is 1311202412401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1042142021131 - 2⁷ = 1042142021003 is a prime.

It is a super-2 number, since 2×1042142021131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042142021101) 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, 629140 + ... + 1574833.

It is an arithmetic number, because the mean of its divisors is an integer number (260536174488).

Almost surely, 2^{1042142021131} is an apocalyptic number.

1042142021131 is a deficient number, since it is larger than the sum of its proper divisors (2676821).

1042142021131 is an equidigital number, since it uses as much as digits as its factorization.

1042142021131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676820.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 1042142021131 its reverse (1311202412401), we get a palindrome (2353344433532).

The spelling of 1042142021131 in words is "one trillion, forty-two billion, one hundred forty-two million, twenty-one thousand, one hundred thirty-one".