4017778542 has 24 divisors (see below), whose sum is σ = 8847897240. Its totient is φ = 1317304080.

The previous prime is 4017778537. The next prime is 4017778547. The reversal of 4017778542 is 2458777104.

It is an interprime number because it is at equal distance from previous prime (4017778537) and next prime (4017778547).

It is a super-2 number, since 2×4017778542² = 32285088825111291528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4017778547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1828492 + ... + 1830687.

It is an arithmetic number, because the mean of its divisors is an integer number (368662385).

Almost surely, 2^4017778542 is an apocalyptic number.

4017778542 is an abundant number, since it is smaller than the sum of its proper divisors (4830118698).

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

4017778542 is a wasteful number, since it uses less digits than its factorization.

4017778542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659248 (or 3659245 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The square root of 4017778542 is about 63385.9490896839. The cubic root of 4017778542 is about 1589.7493825952.

The spelling of 4017778542 in words is "four billion, seventeen million, seven hundred seventy-eight thousand, five hundred forty-two".