40130429 has 2 divisors, whose sum is σ = 40130430. Its totient is φ = 40130428.

The previous prime is 40130401. The next prime is 40130471. The reversal of 40130429 is 92403104.

40130429 is nontrivially palindromic in base 5.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26030404 + 14100025 = 5102^2 + 3755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40130429 is a prime.

It is a super-2 number, since 2×40130429² = 3220902663448082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40130329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20065214 + 20065215.

It is an arithmetic number, because the mean of its divisors is an integer number (20065215).

Almost surely, 2^40130429 is an apocalyptic number.

It is an amenable number.

40130429 is a deficient number, since it is larger than the sum of its proper divisors (1).

40130429 is an equidigital number, since it uses as much as digits as its factorization.

40130429 is an odious number, because the sum of its binary digits is odd.

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

The square root of 40130429 is about 6334.8582462436. The cubic root of 40130429 is about 342.3665034641.

The spelling of 40130429 in words is "forty million, one hundred thirty thousand, four hundred twenty-nine".