401542463 has 16 divisors (see below), whose sum is σ = 477012480. Its totient is φ = 330824736.

The previous prime is 401542459. The next prime is 401542489. The reversal of 401542463 is 364245104.

It is a cyclic number.

It is not a de Polignac number, because 401542463 - 2² = 401542459 is a prime.

It is a super-2 number, since 2×401542463² = 322472699184212738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401542423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12158 + ... + 30836.

It is an arithmetic number, because the mean of its divisors is an integer number (29813280).

Almost surely, 2^401542463 is an apocalyptic number.

401542463 is a deficient number, since it is larger than the sum of its proper divisors (75470017).

401542463 is a wasteful number, since it uses less digits than its factorization.

401542463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18806.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 401542463 is about 20038.5244716271. The cubic root of 401542463 is about 737.7521653452.

Adding to 401542463 its reverse (364245104), we get a palindrome (765787567).

The spelling of 401542463 in words is "four hundred one million, five hundred forty-two thousand, four hundred sixty-three".