401726245 has 8 divisors (see below), whose sum is σ = 482357016. Its totient is φ = 321190656.

The previous prime is 401726243. The next prime is 401726261. The reversal of 401726245 is 542627104.

It can be written as a sum of positive squares in 4 ways, for example, as 2765569 + 398960676 = 1663^2 + 19974^2 .

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 401726245 - 2¹ = 401726243 is a prime.

It is a super-2 number, since 2×401726245² = 322767951843600050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401726243) 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, 14152 + ... + 31681.

It is an arithmetic number, because the mean of its divisors is an integer number (60294627).

Almost surely, 2^401726245 is an apocalyptic number.

It is an amenable number.

401726245 is a deficient number, since it is larger than the sum of its proper divisors (80630771).

401726245 is a wasteful number, since it uses less digits than its factorization.

401726245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47591.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 401726245 is about 20043.1096639219. The cubic root of 401726245 is about 737.8647021260.

The spelling of 401726245 in words is "four hundred one million, seven hundred twenty-six thousand, two hundred forty-five".