42620829 has 4 divisors (see below), whose sum is σ = 56827776. Its totient is φ = 28413884.

The previous prime is 42620827. The next prime is 42620843. The reversal of 42620829 is 92802624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42620829 - 2¹ = 42620827 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42620829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42620821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7103469 + ... + 7103474.

It is an arithmetic number, because the mean of its divisors is an integer number (14206944).

Almost surely, 2^42620829 is an apocalyptic number.

It is an amenable number.

42620829 is a deficient number, since it is larger than the sum of its proper divisors (14206947).

42620829 is a wasteful number, since it uses less digits than its factorization.

42620829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14206946.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 42620829 is about 6528.4629890963. The cubic root of 42620829 is about 349.3070070247.

The spelling of 42620829 in words is "forty-two million, six hundred twenty thousand, eight hundred twenty-nine".