42311409 has 16 divisors (see below), whose sum is σ = 64606080. Its totient is φ = 24128640.

The previous prime is 42311407. The next prime is 42311411. The reversal of 42311409 is 90411324.

It is an interprime number because it is at equal distance from previous prime (42311407) and next prime (42311411).

It is not a de Polignac number, because 42311409 - 2¹ = 42311407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42311407) 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, 10179 + ... + 13719.

It is an arithmetic number, because the mean of its divisors is an integer number (4037880).

Almost surely, 2^42311409 is an apocalyptic number.

It is an amenable number.

42311409 is a deficient number, since it is larger than the sum of its proper divisors (22294671).

42311409 is a wasteful number, since it uses less digits than its factorization.

42311409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 42311409 is about 6504.7220540158. The cubic root of 42311409 is about 348.4596499114.

The spelling of 42311409 in words is "forty-two million, three hundred eleven thousand, four hundred nine".