42621602 has 4 divisors (see below), whose sum is σ = 63932406. Its totient is φ = 21310800.

The previous prime is 42621589. The next prime is 42621611. The reversal of 42621602 is 20612624.

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., 24990001 + 17631601 = 4999^2 + 4199^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655399 + ... + 10655402.

Almost surely, 2^42621602 is an apocalyptic number.

42621602 is a deficient number, since it is larger than the sum of its proper divisors (21310804).

42621602 is a wasteful number, since it uses less digits than its factorization.

42621602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21310803.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 42621602 is about 6528.5221911241. The cubic root of 42621602 is about 349.3091187675.

The spelling of 42621602 in words is "forty-two million, six hundred twenty-one thousand, six hundred two".