42102047002447 has 2 divisors, whose sum is σ = 42102047002448. Its totient is φ = 42102047002446.

The previous prime is 42102047002439. The next prime is 42102047002451. The reversal of 42102047002447 is 74420074020124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42102047002447 - 2³ = 42102047002439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42102047002417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21051023501223 + 21051023501224.

It is an arithmetic number, because the mean of its divisors is an integer number (21051023501224).

Almost surely, 2^{42102047002447} is an apocalyptic number.

42102047002447 is a deficient number, since it is larger than the sum of its proper divisors (1).

42102047002447 is an equidigital number, since it uses as much as digits as its factorization.

42102047002447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 37.

The spelling of 42102047002447 in words is "forty-two trillion, one hundred two billion, forty-seven million, two thousand, four hundred forty-seven".