40154115 has 16 divisors (see below), whose sum is σ = 64406016. Its totient is φ = 21362400.

The previous prime is 40154111. The next prime is 40154123. The reversal of 40154115 is 51145104.

It is not a de Polignac number, because 40154115 - 2² = 40154111 is a prime.

It is a super-2 number, since 2×40154115² = 3224705902866450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40154091 and 40154100.

It is not an unprimeable number, because it can be changed into a prime (40154111) 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, 3360 + ... + 9570.

It is an arithmetic number, because the mean of its divisors is an integer number (4025376).

Almost surely, 2^40154115 is an apocalyptic number.

40154115 is a deficient number, since it is larger than the sum of its proper divisors (24251901).

40154115 is a wasteful number, since it uses less digits than its factorization.

40154115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6650.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 40154115 is about 6336.7274677076. The cubic root of 40154115 is about 342.4338480228.

Adding to 40154115 its reverse (51145104), we get a palindrome (91299219).

The spelling of 40154115 in words is "forty million, one hundred fifty-four thousand, one hundred fifteen".