40626021 has 8 divisors (see below), whose sum is σ = 54198720. Its totient is φ = 27068672.

The previous prime is 40626011. The next prime is 40626029. The reversal of 40626021 is 12062604.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40626021 - 2⁵ = 40625989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40626029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5800 + ... + 10718.

It is an arithmetic number, because the mean of its divisors is an integer number (6774840).

Almost surely, 2^40626021 is an apocalyptic number.

It is an amenable number.

40626021 is a deficient number, since it is larger than the sum of its proper divisors (13572699).

40626021 is a wasteful number, since it uses less digits than its factorization.

40626021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7675.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40626021 is about 6373.8544853173. The cubic root of 40626021 is about 343.7700966322.

Adding to 40626021 its reverse (12062604), we get a palindrome (52688625).

The spelling of 40626021 in words is "forty million, six hundred twenty-six thousand, twenty-one".