42121130424 has 32 divisors (see below), whose sum is σ = 105334266240. Its totient is φ = 14036184800.

The previous prime is 42121130413. The next prime is 42121130437. The reversal of 42121130424 is 42403112124.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 42121130394 and 42121130403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179412 + ... + 341219.

It is an arithmetic number, because the mean of its divisors is an integer number (3291695820).

Almost surely, 2^42121130424 is an apocalyptic number.

It is an amenable number.

42121130424 is an abundant number, since it is smaller than the sum of its proper divisors (63213135816).

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

42121130424 is a wasteful number, since it uses less digits than its factorization.

42121130424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524011 (or 524007 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 42121130424 its reverse (42403112124), we get a palindrome (84524242548).

The spelling of 42121130424 in words is "forty-two billion, one hundred twenty-one million, one hundred thirty thousand, four hundred twenty-four".