40202047 has 2 divisors, whose sum is σ = 40202048. Its totient is φ = 40202046.

The previous prime is 40202021. The next prime is 40202051. The reversal of 40202047 is 74020204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40202047 - 2⁷ = 40201919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40202087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20101023 + 20101024.

It is an arithmetic number, because the mean of its divisors is an integer number (20101024).

Almost surely, 2^40202047 is an apocalyptic number.

40202047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40202047 is an equidigital number, since it uses as much as digits as its factorization.

40202047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 40202047 is about 6340.5084181002. The cubic root of 40202047 is about 342.5700483647.

The spelling of 40202047 in words is "forty million, two hundred two thousand, forty-seven".