42146506 has 4 divisors (see below), whose sum is σ = 63219762. Its totient is φ = 21073252.

The previous prime is 42146497. The next prime is 42146509. The reversal of 42146506 is 60564124.

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., 41075281 + 1071225 = 6409^2 + 1035^2 .

It is not an unprimeable number, because it can be changed into a prime (42146509) by changing a digit.

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, 10536625 + ... + 10536628.

Almost surely, 2^42146506 is an apocalyptic number.

42146506 is a deficient number, since it is larger than the sum of its proper divisors (21073256).

42146506 is a wasteful number, since it uses less digits than its factorization.

42146506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21073255.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 42146506 is about 6492.0340418085. The cubic root of 42146506 is about 348.0063690647.

The spelling of 42146506 in words is "forty-two million, one hundred forty-six thousand, five hundred six".