42131120433440 has 24 divisors (see below), whose sum is σ = 99534772024380. Its totient is φ = 16852448173312.

The previous prime is 42131120433431. The next prime is 42131120433463. The reversal of 42131120433440 is 4433402113124.

It can be written as a sum of positive squares in 2 ways, for example, as 36920255049616 + 5210865383824 = 6076204^2 + 2282732^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 42131120433397 and 42131120433406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131659751195 + ... + 131659751514.

Almost surely, 2^{42131120433440} is an apocalyptic number.

42131120433440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42131120433440 is an abundant number, since it is smaller than the sum of its proper divisors (57403651590940).

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

42131120433440 is a wasteful number, since it uses less digits than its factorization.

42131120433440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263319502724 (or 263319502716 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 42131120433440 its reverse (4433402113124), we get a palindrome (46564522546564).

The spelling of 42131120433440 in words is "forty-two trillion, one hundred thirty-one billion, one hundred twenty million, four hundred thirty-three thousand, four hundred forty".