40021402147 has 2 divisors, whose sum is σ = 40021402148. Its totient is φ = 40021402146.

The previous prime is 40021402087. The next prime is 40021402217. The reversal of 40021402147 is 74120412004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40021402147 - 2²⁷ = 39887184419 is a prime.

It is not a weakly prime, because it can be changed into another prime (40021402247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010701073 + 20010701074.

It is an arithmetic number, because the mean of its divisors is an integer number (20010701074).

Almost surely, 2^40021402147 is an apocalyptic number.

40021402147 is a deficient number, since it is larger than the sum of its proper divisors (1).

40021402147 is an equidigital number, since it uses as much as digits as its factorization.

40021402147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The spelling of 40021402147 in words is "forty billion, twenty-one million, four hundred two thousand, one hundred forty-seven".