42101123034431 has 4 divisors (see below), whose sum is σ = 42289917308352. Its totient is φ = 41912328760512.

The previous prime is 42101123034419. The next prime is 42101123034469. The reversal of 42101123034431 is 13443032110124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42101123034431 - 2³⁸ = 41826245127487 is a prime.

It is a super-2 number, since 2×42101123034431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42101123034394 and 42101123034403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42101123034731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94397136626 + ... + 94397137071.

It is an arithmetic number, because the mean of its divisors is an integer number (10572479327088).

Almost surely, 2^{42101123034431} is an apocalyptic number.

42101123034431 is a deficient number, since it is larger than the sum of its proper divisors (188794273921).

42101123034431 is a wasteful number, since it uses less digits than its factorization.

42101123034431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188794273920.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 42101123034431 its reverse (13443032110124), we get a palindrome (55544155144555).

The spelling of 42101123034431 in words is "forty-two trillion, one hundred one billion, one hundred twenty-three million, thirty-four thousand, four hundred thirty-one".