42135001331 has 16 divisors (see below), whose sum is σ = 44987834400. Its totient is φ = 39349152000.

The previous prime is 42135001289. The next prime is 42135001373. The reversal of 42135001331 is 13310053124.

It is an interprime number because it is at equal distance from previous prime (42135001289) and next prime (42135001373).

It is not a de Polignac number, because 42135001331 - 2¹⁰ = 42135000307 is a prime.

It is a super-2 number, since 2×42135001331² (a number of 22 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 = 42135001297 and 42135001306.

It is not an unprimeable number, because it can be changed into a prime (42135001031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391511 + ... + 487391.

It is an arithmetic number, because the mean of its divisors is an integer number (2811739650).

Almost surely, 2^42135001331 is an apocalyptic number.

42135001331 is a deficient number, since it is larger than the sum of its proper divisors (2852833069).

42135001331 is a wasteful number, since it uses less digits than its factorization.

42135001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96230.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 42135001331 its reverse (13310053124), we get a palindrome (55445054455).

The spelling of 42135001331 in words is "forty-two billion, one hundred thirty-five million, one thousand, three hundred thirty-one".