42664029 has 16 divisors (see below), whose sum is σ = 59473920. Its totient is φ = 27172080.

The previous prime is 42664009. The next prime is 42664043. The reversal of 42664029 is 92046624.

It is a happy number.

It is not a de Polignac number, because 42664029 - 2⁸ = 42663773 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42664009) 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, 4444 + ... + 10250.

It is an arithmetic number, because the mean of its divisors is an integer number (3717120).

Almost surely, 2^42664029 is an apocalyptic number.

It is an amenable number.

42664029 is a deficient number, since it is larger than the sum of its proper divisors (16809891).

42664029 is a wasteful number, since it uses less digits than its factorization.

42664029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5920.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 42664029 is about 6531.7707400061. The cubic root of 42664029 is about 349.4249850772.

The spelling of 42664029 in words is "forty-two million, six hundred sixty-four thousand, twenty-nine".