401020671 has 8 divisors (see below), whose sum is σ = 553132080. Its totient is φ = 258128192.

The previous prime is 401020657. The next prime is 401020687. The reversal of 401020671 is 176020104.

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 401020671 - 2⁵ = 401020639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401020691) 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, 2304630 + ... + 2304803.

It is an arithmetic number, because the mean of its divisors is an integer number (69141510).

Almost surely, 2^401020671 is an apocalyptic number.

401020671 is a deficient number, since it is larger than the sum of its proper divisors (152111409).

401020671 is a wasteful number, since it uses less digits than its factorization.

401020671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4609465.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 401020671 is about 20025.5005180894. The cubic root of 401020671 is about 737.4324647915.

Adding to 401020671 its reverse (176020104), we get a palindrome (577040775).

The spelling of 401020671 in words is "four hundred one million, twenty thousand, six hundred seventy-one".