420151293 has 20 divisors (see below), whose sum is σ = 628490940. Its totient is φ = 279718272.

The previous prime is 420151279. The next prime is 420151321. The reversal of 420151293 is 392151024.

420151293 is a `hidden beast` number, since 420 + 151 + 2 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 354832569 + 65318724 = 18837^2 + 8082^2 .

It is not a de Polignac number, because 420151293 - 2⁵ = 420151261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420151223) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 64021 + ... + 70277.

It is an arithmetic number, because the mean of its divisors is an integer number (31424547).

Almost surely, 2^420151293 is an apocalyptic number.

It is an amenable number.

420151293 is a deficient number, since it is larger than the sum of its proper divisors (208339647).

420151293 is an equidigital number, since it uses as much as digits as its factorization.

420151293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098 (or 7089 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 420151293 is about 20497.5923708127. The cubic root of 420151293 is about 748.9771496704.

The spelling of 420151293 in words is "four hundred twenty million, one hundred fifty-one thousand, two hundred ninety-three".