420661401 has 8 divisors (see below), whose sum is σ = 560984160. Its totient is φ = 280389792.

The previous prime is 420661369. The next prime is 420661427. The reversal of 420661401 is 104166024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420661401 - 2⁵ = 420661369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420661441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15085 + ... + 32693.

It is an arithmetic number, because the mean of its divisors is an integer number (70123020).

Almost surely, 2^420661401 is an apocalyptic number.

It is an amenable number.

420661401 is a deficient number, since it is larger than the sum of its proper divisors (140322759).

420661401 is a wasteful number, since it uses less digits than its factorization.

420661401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25575.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 420661401 is about 20510.0317162115. The cubic root of 420661401 is about 749.2801395111.

The spelling of 420661401 in words is "four hundred twenty million, six hundred sixty-one thousand, four hundred one".