1051321142 has 4 divisors (see below), whose sum is σ = 1576981716. Its totient is φ = 525660570.

The previous prime is 1051321127. The next prime is 1051321189. The reversal of 1051321142 is 2411231501.

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

It is a super-2 number, since 2×1051321142² = 2210552287232368328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262830284 + ... + 262830287.

It is an arithmetic number, because the mean of its divisors is an integer number (394245429).

Almost surely, 2^1051321142 is an apocalyptic number.

1051321142 is a deficient number, since it is larger than the sum of its proper divisors (525660574).

1051321142 is an equidigital number, since it uses as much as digits as its factorization.

1051321142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525660573.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1051321142 is about 32424.0827472421. The cubic root of 1051321142 is about 1016.8224651080.

Adding to 1051321142 its reverse (2411231501), we get a palindrome (3462552643).

The spelling of 1051321142 in words is "one billion, fifty-one million, three hundred twenty-one thousand, one hundred forty-two".