2031420442 has 4 divisors (see below), whose sum is σ = 3047130666. Its totient is φ = 1015710220.

The previous prime is 2031420437. The next prime is 2031420493. The reversal of 2031420442 is 2440241302.

It is a happy number.

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., 1558749361 + 472671081 = 39481^2 + 21741^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507855109 + ... + 507855112.

Almost surely, 2^2031420442 is an apocalyptic number.

2031420442 is a deficient number, since it is larger than the sum of its proper divisors (1015710224).

2031420442 is a wasteful number, since it uses less digits than its factorization.

2031420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015710223.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2031420442 is about 45071.2817878525. The cubic root of 2031420442 is about 1266.4846763312.

Adding to 2031420442 its reverse (2440241302), we get a palindrome (4471661744).

The spelling of 2031420442 in words is "two billion, thirty-one million, four hundred twenty thousand, four hundred forty-two".