420662261 has 8 divisors (see below), whose sum is σ = 446942880. Its totient is φ = 394795728.

The previous prime is 420662257. The next prime is 420662303. The reversal of 420662261 is 162266024.

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

It is a cyclic number.

It is not a de Polignac number, because 420662261 - 2² = 420662257 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 (420662461) 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, 101426 + ... + 105491.

It is an arithmetic number, because the mean of its divisors is an integer number (55867860).

Almost surely, 2^420662261 is an apocalyptic number.

It is an amenable number.

420662261 is a deficient number, since it is larger than the sum of its proper divisors (26280619).

420662261 is a wasteful number, since it uses less digits than its factorization.

420662261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207043.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 420662261 is about 20510.0526815511. The cubic root of 420662261 is about 749.2806501201.

The spelling of 420662261 in words is "four hundred twenty million, six hundred sixty-two thousand, two hundred sixty-one".