42031546 has 4 divisors (see below), whose sum is σ = 63047322. Its totient is φ = 21015772.

The previous prime is 42031543. The next prime is 42031573. The reversal of 42031546 is 64513024.

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., 37344321 + 4687225 = 6111^2 + 2165^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42031546.

It is not an unprimeable number, because it can be changed into a prime (42031543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10507885 + ... + 10507888.

Almost surely, 2^42031546 is an apocalyptic number.

42031546 is a deficient number, since it is larger than the sum of its proper divisors (21015776).

42031546 is a wasteful number, since it uses less digits than its factorization.

42031546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21015775.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 42031546 is about 6483.1740683094. The cubic root of 42031546 is about 347.6896702778.

The spelling of 42031546 in words is "forty-two million, thirty-one thousand, five hundred forty-six".