401424253 has 2 divisors, whose sum is σ = 401424254. Its totient is φ = 401424252.

The previous prime is 401424223. The next prime is 401424263. The reversal of 401424253 is 352424104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240312004 + 161112249 = 15502^2 + 12693^2 .

It is a cyclic number.

It is not a de Polignac number, because 401424253 - 2⁹ = 401423741 is a prime.

It is a super-2 number, since 2×401424253² = 322282861793216018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401424223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200712126 + 200712127.

It is an arithmetic number, because the mean of its divisors is an integer number (200712127).

Almost surely, 2^401424253 is an apocalyptic number.

It is an amenable number.

401424253 is a deficient number, since it is larger than the sum of its proper divisors (1).

401424253 is an equidigital number, since it uses as much as digits as its factorization.

401424253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 401424253 is about 20035.5746860428. The cubic root of 401424253 is about 737.6797626724.

Adding to 401424253 its reverse (352424104), we get a palindrome (753848357).

The spelling of 401424253 in words is "four hundred one million, four hundred twenty-four thousand, two hundred fifty-three".