401040254 has 4 divisors (see below), whose sum is σ = 601560384. Its totient is φ = 200520126.

The previous prime is 401040223. The next prime is 401040293. The reversal of 401040254 is 452040104.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100260062 + ... + 100260065.

It is an arithmetic number, because the mean of its divisors is an integer number (150390096).

Almost surely, 2^401040254 is an apocalyptic number.

401040254 is a deficient number, since it is larger than the sum of its proper divisors (200520130).

401040254 is a wasteful number, since it uses less digits than its factorization.

401040254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200520129.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 401040254 is about 20025.9894636944. The cubic root of 401040254 is about 737.4444682500. Note that the first 4 decimals are identical.

Adding to 401040254 its reverse (452040104), we get a palindrome (853080358).

The spelling of 401040254 in words is "four hundred one million, forty thousand, two hundred fifty-four".