40026121 has 4 divisors (see below), whose sum is σ = 40135552. Its totient is φ = 39916692.

The previous prime is 40026113. The next prime is 40026139. The reversal of 40026121 is 12162004.

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 a cyclic number.

It is not a de Polignac number, because 40026121 - 2³ = 40026113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40026095 and 40026104.

It is not an unprimeable number, because it can be changed into a prime (40026101) 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, 54165 + ... + 54898.

It is an arithmetic number, because the mean of its divisors is an integer number (10033888).

Almost surely, 2^40026121 is an apocalyptic number.

It is an amenable number.

40026121 is a deficient number, since it is larger than the sum of its proper divisors (109431).

40026121 is a wasteful number, since it uses less digits than its factorization.

40026121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109430.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 40026121 is about 6326.6200296841. The cubic root of 40026121 is about 342.0696169395.

Adding to 40026121 its reverse (12162004), we get a palindrome (52188125).

The spelling of 40026121 in words is "forty million, twenty-six thousand, one hundred twenty-one".