40124453 has 2 divisors, whose sum is σ = 40124454. Its totient is φ = 40124452.

The previous prime is 40124449. The next prime is 40124473. The reversal of 40124453 is 35442104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24930049 + 15194404 = 4993^2 + 3898^2 .

It is a cyclic number.

It is not a de Polignac number, because 40124453 - 2² = 40124449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40124473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20062226 + 20062227.

It is an arithmetic number, because the mean of its divisors is an integer number (20062227).

Almost surely, 2^40124453 is an apocalyptic number.

It is an amenable number.

40124453 is a deficient number, since it is larger than the sum of its proper divisors (1).

40124453 is an equidigital number, since it uses as much as digits as its factorization.

40124453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40124453 is about 6334.3865527768. The cubic root of 40124453 is about 342.3495081828.

Adding to 40124453 its reverse (35442104), we get a palindrome (75566557).

The spelling of 40124453 in words is "forty million, one hundred twenty-four thousand, four hundred fifty-three".