40302121 has 8 divisors (see below), whose sum is σ = 42868224. Its totient is φ = 37757760.

The previous prime is 40302113. The next prime is 40302127. The reversal of 40302121 is 12120304.

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 40302121 - 2³ = 40302113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40302127) 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, 1525 + ... + 9106.

It is an arithmetic number, because the mean of its divisors is an integer number (5358528).

Almost surely, 2^40302121 is an apocalyptic number.

It is an amenable number.

40302121 is a deficient number, since it is larger than the sum of its proper divisors (2566103).

40302121 is a wasteful number, since it uses less digits than its factorization.

40302121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10871.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40302121 is about 6348.3951515324. The cubic root of 40302121 is about 342.8540633239.

Adding to 40302121 its reverse (12120304), we get a palindrome (52422425).

The spelling of 40302121 in words is "forty million, three hundred two thousand, one hundred twenty-one".