420194140 has 48 divisors (see below), whose sum is σ = 897311520. Its totient is φ = 165259520.

The previous prime is 420194113. The next prime is 420194141. The reversal of 420194140 is 41491024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420194141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446070 + ... + 447010.

It is an arithmetic number, because the mean of its divisors is an integer number (18693990).

Almost surely, 2^420194140 is an apocalyptic number.

It is an amenable number.

420194140 is an abundant number, since it is smaller than the sum of its proper divisors (477117380).

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

420194140 is a wasteful number, since it uses less digits than its factorization.

420194140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302 (or 1300 counting only the distinct ones).

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

The square root of 420194140 is about 20498.6375156985. The cubic root of 420194140 is about 749.0026090178.

The spelling of 420194140 in words is "four hundred twenty million, one hundred ninety-four thousand, one hundred forty".