1042251442 has 4 divisors (see below), whose sum is σ = 1563377166. Its totient is φ = 521125720.

The previous prime is 1042251433. The next prime is 1042251443. The reversal of 1042251442 is 2441522401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2441522401 = 19 ⋅128501179.

It can be written as a sum of positive squares in only one way, i.e., 549011761 + 493239681 = 23431^2 + 22209^2 .

It is not an unprimeable number, because it can be changed into a prime (1042251443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260562859 + ... + 260562862.

Almost surely, 2^1042251442 is an apocalyptic number.

1042251442 is a deficient number, since it is larger than the sum of its proper divisors (521125724).

1042251442 is an equidigital number, since it uses as much as digits as its factorization.

1042251442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521125723.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1042251442 is about 32283.9192478237. The cubic root of 1042251442 is about 1013.8899889339.

Adding to 1042251442 its reverse (2441522401), we get a palindrome (3483773843).

The spelling of 1042251442 in words is "one billion, forty-two million, two hundred fifty-one thousand, four hundred forty-two".