40120151 has 4 divisors (see below), whose sum is σ = 40178904. Its totient is φ = 40061400.

The previous prime is 40120139. The next prime is 40120217. The reversal of 40120151 is 15102104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40120151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40120111) 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, 28340 + ... + 29721.

It is an arithmetic number, because the mean of its divisors is an integer number (10044726).

Almost surely, 2^40120151 is an apocalyptic number.

40120151 is a deficient number, since it is larger than the sum of its proper divisors (58753).

40120151 is an equidigital number, since it uses as much as digits as its factorization.

40120151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58752.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 40120151 is about 6334.0469685660. The cubic root of 40120151 is about 342.3372725832.

Adding to 40120151 its reverse (15102104), we get a palindrome (55222255).

The spelling of 40120151 in words is "forty million, one hundred twenty thousand, one hundred fifty-one".