40000424020429 has 2 divisors, whose sum is σ = 40000424020430. Its totient is φ = 40000424020428.

The previous prime is 40000424020391. The next prime is 40000424020471. The reversal of 40000424020429 is 92402042400004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38585092656100 + 1415331364329 = 6211690^2 + 1189677^2 .

It is a cyclic number.

It is not a de Polignac number, because 40000424020429 - 2¹¹ = 40000424018381 is a prime.

It is a super-2 number, since 2×40000424020429² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40000424020429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40000424020499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20000212010214 + 20000212010215.

It is an arithmetic number, because the mean of its divisors is an integer number (20000212010215).

Almost surely, 2^{40000424020429} is an apocalyptic number.

It is an amenable number.

40000424020429 is a deficient number, since it is larger than the sum of its proper divisors (1).

40000424020429 is an equidigital number, since it uses as much as digits as its factorization.

40000424020429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

The spelling of 40000424020429 in words is "forty trillion, four hundred twenty-four million, twenty thousand, four hundred twenty-nine".