42294749 has 4 divisors (see below), whose sum is σ = 48336864. Its totient is φ = 36252636.

The previous prime is 42294727. The next prime is 42294761. The reversal of 42294749 is 94749224.

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 not a de Polignac number, because 42294749 - 2²⁰ = 41246173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42294709) 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, 3021047 + ... + 3021060.

It is an arithmetic number, because the mean of its divisors is an integer number (12084216).

Almost surely, 2^42294749 is an apocalyptic number.

It is an amenable number.

42294749 is a deficient number, since it is larger than the sum of its proper divisors (6042115).

42294749 is an equidigital number, since it uses as much as digits as its factorization.

42294749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042114.

The product of its digits is 145152, while the sum is 41.

The square root of 42294749 is about 6503.4413197937. The cubic root of 42294749 is about 348.4139089004.

The spelling of 42294749 in words is "forty-two million, two hundred ninety-four thousand, seven hundred forty-nine".