42402434 has 8 divisors (see below), whose sum is σ = 63857808. Its totient is φ = 21116500.

The previous prime is 42402431. The next prime is 42402457. The reversal of 42402434 is 43420424.

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

It is not an unprimeable number, because it can be changed into a prime (42402431) 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, 41732 + ... + 42735.

It is an arithmetic number, because the mean of its divisors is an integer number (7982226).

Almost surely, 2^42402434 is an apocalyptic number.

42402434 is a deficient number, since it is larger than the sum of its proper divisors (21455374).

42402434 is a wasteful number, since it uses less digits than its factorization.

42402434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84720.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 42402434 is about 6511.7151350470. The cubic root of 42402434 is about 348.7093526279.

Adding to 42402434 its reverse (43420424), we get a palindrome (85822858).

The spelling of 42402434 in words is "forty-two million, four hundred two thousand, four hundred thirty-four".