3557421442 has 4 divisors (see below), whose sum is σ = 5336132166. Its totient is φ = 1778710720.

The previous prime is 3557421437. The next prime is 3557421443. The reversal of 3557421442 is 2441247553.

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., 2991980601 + 565440841 = 54699^2 + 23779^2 .

It is not an unprimeable number, because it can be changed into a prime (3557421443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 889355359 + ... + 889355362.

Almost surely, 2^3557421442 is an apocalyptic number.

3557421442 is a deficient number, since it is larger than the sum of its proper divisors (1778710724).

3557421442 is a wasteful number, since it uses less digits than its factorization.

3557421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778710723.

The product of its digits is 134400, while the sum is 37.

The square root of 3557421442 is about 59644.1232813426. The cubic root of 3557421442 is about 1526.5525983964.

Adding to 3557421442 its reverse (2441247553), we get a palindrome (5998668995).

The spelling of 3557421442 in words is "three billion, five hundred fifty-seven million, four hundred twenty-one thousand, four hundred forty-two".