401514721 has 8 divisors (see below), whose sum is σ = 427511520. Its totient is φ = 375782208.

The previous prime is 401514709. The next prime is 401514733. The reversal of 401514721 is 127415104.

It is an interprime number because it is at equal distance from previous prime (401514709) and next prime (401514733).

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 401514721 - 2¹³ = 401506529 is a prime.

It is a super-2 number, since 2×401514721² = 322428142359415682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401514791) 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, 62931 + ... + 69016.

It is an arithmetic number, because the mean of its divisors is an integer number (53438940).

Almost surely, 2^401514721 is an apocalyptic number.

It is an amenable number.

401514721 is a deficient number, since it is larger than the sum of its proper divisors (25996799).

401514721 is a wasteful number, since it uses less digits than its factorization.

401514721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132143.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 401514721 is about 20037.8322430347. The cubic root of 401514721 is about 737.7351748699.

Adding to 401514721 its reverse (127415104), we get a palindrome (528929825).

The spelling of 401514721 in words is "four hundred one million, five hundred fourteen thousand, seven hundred twenty-one".