42115311 has 24 divisors (see below), whose sum is σ = 70172960. Its totient is φ = 23841216.

The previous prime is 42115303. The next prime is 42115313. The reversal of 42115311 is 11351124.

It is not a de Polignac number, because 42115311 - 2³ = 42115303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42115313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3801 + ... + 9933.

Almost surely, 2^42115311 is an apocalyptic number.

42115311 is a deficient number, since it is larger than the sum of its proper divisors (28057649).

42115311 is a wasteful number, since it uses less digits than its factorization.

42115311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6255 (or 6252 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 42115311 is about 6489.6310372779. The cubic root of 42115311 is about 347.9204881760.

Adding to 42115311 its reverse (11351124), we get a palindrome (53466435).

The spelling of 42115311 in words is "forty-two million, one hundred fifteen thousand, three hundred eleven".