42434427 has 8 divisors (see below), whose sum is σ = 64662016. Its totient is φ = 24248232.

The previous prime is 42434423. The next prime is 42434459. The reversal of 42434427 is 72443424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42434427 - 2² = 42434423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42434394 and 42434403.

It is not an unprimeable number, because it can be changed into a prime (42434423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010323 + ... + 1010364.

It is an arithmetic number, because the mean of its divisors is an integer number (8082752).

Almost surely, 2^42434427 is an apocalyptic number.

42434427 is a deficient number, since it is larger than the sum of its proper divisors (22227589).

42434427 is a wasteful number, since it uses less digits than its factorization.

42434427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020697.

The product of its digits is 21504, while the sum is 30.

The square root of 42434427 is about 6514.1712442950. The cubic root of 42434427 is about 348.7970319787.

The spelling of 42434427 in words is "forty-two million, four hundred thirty-four thousand, four hundred twenty-seven".