40125321 has 64 divisors (see below), whose sum is σ = 68428800. Its totient is φ = 23079168.

The previous prime is 40125313. The next prime is 40125329. The reversal of 40125321 is 12352104.

It is an interprime number because it is at equal distance from previous prime (40125313) and next prime (40125329).

It is not a de Polignac number, because 40125321 - 2³ = 40125313 is a prime.

It is a super-2 number, since 2×40125321² = 3220082770706082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40125294 and 40125303.

It is not an unprimeable number, because it can be changed into a prime (40125329) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 374950 + ... + 375056.

It is an arithmetic number, because the mean of its divisors is an integer number (1069200).

Almost surely, 2^40125321 is an apocalyptic number.

It is an amenable number.

40125321 is a deficient number, since it is larger than the sum of its proper divisors (28303479).

40125321 is a wasteful number, since it uses less digits than its factorization.

40125321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40125321 is about 6334.4550673282. The cubic root of 40125321 is about 342.3519768123.

Adding to 40125321 its reverse (12352104), we get a palindrome (52477425).

The spelling of 40125321 in words is "forty million, one hundred twenty-five thousand, three hundred twenty-one".