10042020434391 has 32 divisors (see below), whose sum is σ = 14643856512000. Its totient is φ = 6070542305280.

The previous prime is 10042020434317. The next prime is 10042020434399. The reversal of 10042020434391 is 19343402024001.

It is not a de Polignac number, because 10042020434391 - 2¹¹ = 10042020432343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10042020434399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145719655 + ... + 145788551.

It is an arithmetic number, because the mean of its divisors is an integer number (457620516000).

Almost surely, 2^{10042020434391} is an apocalyptic number.

10042020434391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10042020434391 is a deficient number, since it is larger than the sum of its proper divisors (4601836077609).

10042020434391 is a wasteful number, since it uses less digits than its factorization.

10042020434391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80119.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 10042020434391 its reverse (19343402024001), we get a palindrome (29385422458392).

The spelling of 10042020434391 in words is "ten trillion, forty-two billion, twenty million, four hundred thirty-four thousand, three hundred ninety-one".