420149742 has 16 divisors (see below), whose sum is σ = 852135552. Its totient is φ = 138077240.

The previous prime is 420149711. The next prime is 420149759. The reversal of 420149742 is 247941024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492708 + ... + 493559.

It is an arithmetic number, because the mean of its divisors is an integer number (53258472).

Almost surely, 2^420149742 is an apocalyptic number.

420149742 is an abundant number, since it is smaller than the sum of its proper divisors (431985810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420149742 is a wasteful number, since it uses less digits than its factorization.

420149742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986343.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 420149742 is about 20497.5545370661. The cubic root of 420149742 is about 748.9762280461.

The spelling of 420149742 in words is "four hundred twenty million, one hundred forty-nine thousand, seven hundred forty-two".