42421546 has 4 divisors (see below), whose sum is σ = 63632322. Its totient is φ = 21210772.

The previous prime is 42421493. The next prime is 42421553. The reversal of 42421546 is 64512424.

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

It can be written as a sum of positive squares in only one way, i.e., 23629321 + 18792225 = 4861^2 + 4335^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605385 + ... + 10605388.

Almost surely, 2^42421546 is an apocalyptic number.

42421546 is a deficient number, since it is larger than the sum of its proper divisors (21210776).

42421546 is a wasteful number, since it uses less digits than its factorization.

42421546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21210775.

The product of its digits is 7680, while the sum is 28.

The square root of 42421546 is about 6513.1824786352. The cubic root of 42421546 is about 348.7617358794.

The spelling of 42421546 in words is "forty-two million, four hundred twenty-one thousand, five hundred forty-six".