420947149 has 16 divisors (see below), whose sum is σ = 509932800. Its totient is φ = 339220224.

The previous prime is 420947129. The next prime is 420947161. The reversal of 420947149 is 941749024.

It is not a de Polignac number, because 420947149 - 2²¹ = 418849997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420947129) 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, 184387 + ... + 186655.

It is an arithmetic number, because the mean of its divisors is an integer number (31870800).

Almost surely, 2^420947149 is an apocalyptic number.

It is an amenable number.

420947149 is a deficient number, since it is larger than the sum of its proper divisors (88985651).

420947149 is a wasteful number, since it uses less digits than its factorization.

420947149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 420947149 is about 20516.9965881949. The cubic root of 420947149 is about 749.4497587819.

The spelling of 420947149 in words is "four hundred twenty million, nine hundred forty-seven thousand, one hundred forty-nine".