40180401 has 16 divisors (see below), whose sum is σ = 63028800. Its totient is φ = 25210944.

The previous prime is 40180397. The next prime is 40180429. The reversal of 40180401 is 10408104.

It is not a de Polignac number, because 40180401 - 2² = 40180397 is a prime.

It is a super-2 number, since 2×40180401² = 3228929249041602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40180501) 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, 43311 + ... + 44228.

It is an arithmetic number, because the mean of its divisors is an integer number (3939300).

Almost surely, 2^40180401 is an apocalyptic number.

It is an amenable number.

40180401 is a deficient number, since it is larger than the sum of its proper divisors (22848399).

40180401 is a wasteful number, since it uses less digits than its factorization.

40180401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87565 (or 87559 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 40180401 is about 6338.8012273615. The cubic root of 40180401 is about 342.5085539626.

Adding to 40180401 its reverse (10408104), we get a palindrome (50588505).

The spelling of 40180401 in words is "forty million, one hundred eighty thousand, four hundred one".