1420420042 has 4 divisors (see below), whose sum is σ = 2130630066. Its totient is φ = 710210020.

The previous prime is 1420420021. The next prime is 1420420061. The reversal of 1420420042 is 2400240241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2400240241 = 7 ⋅342891463.

It can be written as a sum of positive squares in only one way, i.e., 1258901361 + 161518681 = 35481^2 + 12709^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355105009 + ... + 355105012.

Almost surely, 2^1420420042 is an apocalyptic number.

1420420042 is a deficient number, since it is larger than the sum of its proper divisors (710210024).

1420420042 is an equidigital number, since it uses as much as digits as its factorization.

1420420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710210023.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1420420042 is about 37688.4603293899. The cubic root of 1420420042 is about 1124.1016807707.

Adding to 1420420042 its reverse (2400240241), we get a palindrome (3820660283).

The spelling of 1420420042 in words is "one billion, four hundred twenty million, four hundred twenty thousand, forty-two".