40258642 has 8 divisors (see below), whose sum is σ = 60701436. Its totient is φ = 20024832.

The previous prime is 40258609. The next prime is 40258651. The reversal of 40258642 is 24685204.

It can be written as a sum of positive squares in 2 ways, for example, as 39955041 + 303601 = 6321^2 + 551^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 51763 + ... + 52534.

Almost surely, 2^40258642 is an apocalyptic number.

40258642 is a deficient number, since it is larger than the sum of its proper divisors (20442794).

40258642 is a wasteful number, since it uses less digits than its factorization.

40258642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104492.

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

The square root of 40258642 is about 6344.9698186831. The cubic root of 40258642 is about 342.7307255992.

The spelling of 40258642 in words is "forty million, two hundred fifty-eight thousand, six hundred forty-two".