50042123387 has 2 divisors, whose sum is σ = 50042123388. Its totient is φ = 50042123386.

The previous prime is 50042123381. The next prime is 50042123429. The reversal of 50042123387 is 78332124005.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50042123387 - 2¹⁰ = 50042122363 is a prime.

It is a super-2 number, since 2×50042123387² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50042123381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25021061693 + 25021061694.

It is an arithmetic number, because the mean of its divisors is an integer number (25021061694).

Almost surely, 2^50042123387 is an apocalyptic number.

50042123387 is a deficient number, since it is larger than the sum of its proper divisors (1).

50042123387 is an equidigital number, since it uses as much as digits as its factorization.

50042123387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 50042123387 in words is "fifty billion, forty-two million, one hundred twenty-three thousand, three hundred eighty-seven".