40123049 has 2 divisors, whose sum is σ = 40123050. Its totient is φ = 40123048.

The previous prime is 40123001. The next prime is 40123087. The reversal of 40123049 is 94032104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34515625 + 5607424 = 5875^2 + 2368^2 .

It is a cyclic number.

It is not a de Polignac number, because 40123049 - 2²⁰ = 39074473 is a prime.

It is a super-2 number, since 2×40123049² = 3219718122112802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40123099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20061524 + 20061525.

It is an arithmetic number, because the mean of its divisors is an integer number (20061525).

Almost surely, 2^40123049 is an apocalyptic number.

It is an amenable number.

40123049 is a deficient number, since it is larger than the sum of its proper divisors (1).

40123049 is an equidigital number, since it uses as much as digits as its factorization.

40123049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40123049 is about 6334.2757281318. The cubic root of 40123049 is about 342.3455150707.

The spelling of 40123049 in words is "forty million, one hundred twenty-three thousand, forty-nine".