401203155 has 16 divisors (see below), whose sum is σ = 648545184. Its totient is φ = 211768320.

The previous prime is 401203151. The next prime is 401203171. The reversal of 401203155 is 551302104.

It is not a de Polignac number, because 401203155 - 2² = 401203151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (401203151) 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, 136416 + ... + 139325.

It is an arithmetic number, because the mean of its divisors is an integer number (40534074).

Almost surely, 2^401203155 is an apocalyptic number.

401203155 is a deficient number, since it is larger than the sum of its proper divisors (247342029).

401203155 is a wasteful number, since it uses less digits than its factorization.

401203155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275846.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 401203155 is about 20030.0562904851. The cubic root of 401203155 is about 737.5443037638.

Adding to 401203155 its reverse (551302104), we get a palindrome (952505259).

The spelling of 401203155 in words is "four hundred one million, two hundred three thousand, one hundred fifty-five".