42404031434 has 8 divisors (see below), whose sum is σ = 63607207620. Its totient is φ = 21201628896.

The previous prime is 42404031431. The next prime is 42404031463. The reversal of 42404031434 is 43413040424.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40018002025 + 2386029409 = 200045^2 + 48847^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 42404031397 and 42404031406.

It is not an unprimeable number, because it can be changed into a prime (42404031431) 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, 28139 + ... + 292574.

Almost surely, 2^42404031434 is an apocalyptic number.

42404031434 is a deficient number, since it is larger than the sum of its proper divisors (21203176186).

42404031434 is a wasteful number, since it uses less digits than its factorization.

42404031434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386824.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 42404031434 its reverse (43413040424), we get a palindrome (85817071858).

The spelling of 42404031434 in words is "forty-two billion, four hundred four million, thirty-one thousand, four hundred thirty-four".