42494029 has 4 divisors (see below), whose sum is σ = 42971580. Its totient is φ = 42016480.

The previous prime is 42494027. The next prime is 42494057. The reversal of 42494029 is 92049424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20385225 + 22108804 = 4515^2 + 4702^2 .

It is a cyclic number.

It is not a de Polignac number, because 42494029 - 2¹ = 42494027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42493985 and 42494003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42494027) 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, 238642 + ... + 238819.

It is an arithmetic number, because the mean of its divisors is an integer number (10742895).

Almost surely, 2^42494029 is an apocalyptic number.

It is an amenable number.

42494029 is a deficient number, since it is larger than the sum of its proper divisors (477551).

42494029 is an equidigital number, since it uses as much as digits as its factorization.

42494029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477550.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 42494029 is about 6518.7444343217. The cubic root of 42494029 is about 348.9602585267.

The spelling of 42494029 in words is "forty-two million, four hundred ninety-four thousand, twenty-nine".