420014542 has 4 divisors (see below), whose sum is σ = 630021816. Its totient is φ = 210007270.

The previous prime is 420014531. The next prime is 420014561. The reversal of 420014542 is 245410024.

It is a happy number.

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

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105003634 + ... + 105003637.

It is an arithmetic number, because the mean of its divisors is an integer number (157505454).

Almost surely, 2^420014542 is an apocalyptic number.

420014542 is a deficient number, since it is larger than the sum of its proper divisors (210007274).

420014542 is a wasteful number, since it uses less digits than its factorization.

420014542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210007273.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 420014542 is about 20494.2563173197. The cubic root of 420014542 is about 748.8958817318.

Adding to 420014542 its reverse (245410024), we get a palindrome (665424566).

The spelling of 420014542 in words is "four hundred twenty million, fourteen thousand, five hundred forty-two".