50142121040 has 40 divisors (see below), whose sum is σ = 127178654688. Its totient is φ = 18233498240.

The previous prime is 50142121039. The next prime is 50142121049. The reversal of 50142121040 is 4012124105.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50142121049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28488962 + ... + 28490721.

Almost surely, 2^50142121040 is an apocalyptic number.

It is an amenable number.

50142121040 is an abundant number, since it is smaller than the sum of its proper divisors (77036533648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50142121040 is a wasteful number, since it uses less digits than its factorization.

50142121040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56979707 (or 56979701 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 50142121040 its reverse (4012124105), we get a palindrome (54154245145).

The spelling of 50142121040 in words is "fifty billion, one hundred forty-two million, one hundred twenty-one thousand, forty".