40125123 has 12 divisors (see below), whose sum is σ = 58025760. Its totient is φ = 26719056.

The previous prime is 40125103. The next prime is 40125139. The reversal of 40125123 is 32152104.

It is not a de Polignac number, because 40125123 - 2⁵ = 40125091 is a prime.

It is a super-2 number, since 2×40125123² = 3220050991530258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40125096 and 40125105.

It is not an unprimeable number, because it can be changed into a prime (40125103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7798 + ... + 11876.

It is an arithmetic number, because the mean of its divisors is an integer number (4835480).

Almost surely, 2^40125123 is an apocalyptic number.

40125123 is a deficient number, since it is larger than the sum of its proper divisors (17900637).

40125123 is a wasteful number, since it uses less digits than its factorization.

40125123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5178 (or 5175 counting only the distinct ones).

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

The square root of 40125123 is about 6334.4394384981. The cubic root of 40125123 is about 342.3514136949.

Adding to 40125123 its reverse (32152104), we get a palindrome (72277227).

The spelling of 40125123 in words is "forty million, one hundred twenty-five thousand, one hundred twenty-three".