4015542642 has 32 divisors (see below), whose sum is σ = 8109238272. Its totient is φ = 1325528064.

The previous prime is 4015542637. The next prime is 4015542667. The reversal of 4015542642 is 2462455104.

It is a super-2 number, since 2×4015542642² = 32249165419440680328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435108 + ... + 444240.

It is an arithmetic number, because the mean of its divisors is an integer number (253413696).

Almost surely, 2^4015542642 is an apocalyptic number.

4015542642 is an abundant number, since it is smaller than the sum of its proper divisors (4093695630).

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

4015542642 is a wasteful number, since it uses less digits than its factorization.

4015542642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9842.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 4015542642 is about 63368.3094456527. The cubic root of 4015542642 is about 1589.4544285406.

Adding to 4015542642 its reverse (2462455104), we get a palindrome (6477997746).

The spelling of 4015542642 in words is "four billion, fifteen million, five hundred forty-two thousand, six hundred forty-two".