1421052442 has 4 divisors (see below), whose sum is σ = 2131578666. Its totient is φ = 710526220.

The previous prime is 1421052421. The next prime is 1421052449. The reversal of 1421052442 is 2442501241.

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

It can be written as a sum of positive squares in only one way, i.e., 1241787121 + 179265321 = 35239^2 + 13389^2 .

It is not an unprimeable number, because it can be changed into a prime (1421052449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355263109 + ... + 355263112.

Almost surely, 2^1421052442 is an apocalyptic number.

1421052442 is a deficient number, since it is larger than the sum of its proper divisors (710526224).

1421052442 is an equidigital number, since it uses as much as digits as its factorization.

1421052442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710526223.

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

The square root of 1421052442 is about 37696.8492317329. The cubic root of 1421052442 is about 1124.2684803577.

Adding to 1421052442 its reverse (2442501241), we get a palindrome (3863553683).

The spelling of 1421052442 in words is "one billion, four hundred twenty-one million, fifty-two thousand, four hundred forty-two".