420120442 has 16 divisors (see below), whose sum is σ = 723830400. Its totient is φ = 179145648.

The previous prime is 420120433. The next prime is 420120443. The reversal of 420120442 is 244021024.

It is not an unprimeable number, because it can be changed into a prime (420120443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72613 + ... + 78184.

It is an arithmetic number, because the mean of its divisors is an integer number (45239400).

Almost surely, 2^420120442 is an apocalyptic number.

420120442 is a deficient number, since it is larger than the sum of its proper divisors (303709958).

420120442 is a wasteful number, since it uses less digits than its factorization.

420120442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151005.

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

The square root of 420120442 is about 20496.8398051992. The cubic root of 420120442 is about 748.9588171792.

Adding to 420120442 its reverse (244021024), we get a palindrome (664141466).

The spelling of 420120442 in words is "four hundred twenty million, one hundred twenty thousand, four hundred forty-two".