420451142 has 8 divisors (see below), whose sum is σ = 631059600. Its totient is φ = 210097944.

The previous prime is 420451117. The next prime is 420451147. The reversal of 420451142 is 241154024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420451147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59642 + ... + 66317.

It is an arithmetic number, because the mean of its divisors is an integer number (78882450).

Almost surely, 2^420451142 is an apocalyptic number.

420451142 is a deficient number, since it is larger than the sum of its proper divisors (210608458).

420451142 is a wasteful number, since it uses less digits than its factorization.

420451142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127630.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 420451142 is about 20504.9053155580. The cubic root of 420451142 is about 749.1552812538.

The spelling of 420451142 in words is "four hundred twenty million, four hundred fifty-one thousand, one hundred forty-two".