42311906 has 32 divisors (see below), whose sum is σ = 79083648. Its totient is φ = 16531200.

The previous prime is 42311903. The next prime is 42311921. The reversal of 42311906 is 60911324.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42311903) 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, 13706 + ... + 16506.

It is an arithmetic number, because the mean of its divisors is an integer number (2471364).

Almost surely, 2^42311906 is an apocalyptic number.

42311906 is a deficient number, since it is larger than the sum of its proper divisors (36771742).

42311906 is a wasteful number, since it uses less digits than its factorization.

42311906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 42311906 is about 6504.7602569195. The cubic root of 42311906 is about 348.4610142697.

The spelling of 42311906 in words is "forty-two million, three hundred eleven thousand, nine hundred six".