40286542 has 4 divisors (see below), whose sum is σ = 60429816. Its totient is φ = 20143270.

The previous prime is 40286531. The next prime is 40286551. The reversal of 40286542 is 24568204.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071634 + ... + 10071637.

It is an arithmetic number, because the mean of its divisors is an integer number (15107454).

Almost surely, 2^40286542 is an apocalyptic number.

40286542 is a deficient number, since it is larger than the sum of its proper divisors (20143274).

40286542 is a wasteful number, since it uses less digits than its factorization.

40286542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20143273.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 40286542 is about 6347.1680299170. The cubic root of 40286542 is about 342.8098802742.

The spelling of 40286542 in words is "forty million, two hundred eighty-six thousand, five hundred forty-two".