400140201 has 4 divisors (see below), whose sum is σ = 533520272. Its totient is φ = 266760132.

The previous prime is 400140161. The next prime is 400140211. The reversal of 400140201 is 102041004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 400140201 - 2⁶ = 400140137 is a prime.

It is a super-2 number, since 2×400140201² = 320224360912640802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400140211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66690031 + ... + 66690036.

It is an arithmetic number, because the mean of its divisors is an integer number (133380068).

Almost surely, 2^400140201 is an apocalyptic number.

It is an amenable number.

400140201 is a deficient number, since it is larger than the sum of its proper divisors (133380071).

400140201 is a wasteful number, since it uses less digits than its factorization.

400140201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133380070.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400140201 is about 20003.5047179238. The cubic root of 400140201 is about 736.8923738225.

Adding to 400140201 its reverse (102041004), we get a palindrome (502181205).

The spelling of 400140201 in words is "four hundred million, one hundred forty thousand, two hundred one".