40420542 has 16 divisors (see below), whose sum is σ = 80937360. Its totient is φ = 13457472.

The previous prime is 40420531. The next prime is 40420553. The reversal of 40420542 is 24502404.

40420542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40420531) and next prime (40420553).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2184 + ... + 9252.

It is an arithmetic number, because the mean of its divisors is an integer number (5058585).

Almost surely, 2^40420542 is an apocalyptic number.

40420542 is an abundant number, since it is smaller than the sum of its proper divisors (40516818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40420542 is a wasteful number, since it uses less digits than its factorization.

40420542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8027.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 40420542 is about 6357.7151556200. The cubic root of 40420542 is about 343.1895412780.

Adding to 40420542 its reverse (24502404), we get a palindrome (64922946).

The spelling of 40420542 in words is "forty million, four hundred twenty thousand, five hundred forty-two".