420291142 has 16 divisors (see below), whose sum is σ = 653112000. Its totient is φ = 202608000.

The previous prime is 420291083. The next prime is 420291143. The reversal of 420291142 is 241192024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420291143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38734 + ... + 48382.

It is an arithmetic number, because the mean of its divisors is an integer number (40819500).

Almost surely, 2^420291142 is an apocalyptic number.

420291142 is a deficient number, since it is larger than the sum of its proper divisors (232820858).

420291142 is a wasteful number, since it uses less digits than its factorization.

420291142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10431.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 420291142 is about 20501.0034388564. The cubic root of 420291142 is about 749.0602404426.

The spelling of 420291142 in words is "four hundred twenty million, two hundred ninety-one thousand, one hundred forty-two".