6400088742 has 16 divisors (see below), whose sum is σ = 12826467072. Its totient is φ = 2128981320.

The previous prime is 6400088741. The next prime is 6400088743. The reversal of 6400088742 is 2478800046.

It is an interprime number because it is at equal distance from previous prime (6400088741) and next prime (6400088743).

It is a super-2 number, since 2×6400088742² = 81922271810950285128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6400088742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400088741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092234 + ... + 1098077.

It is an arithmetic number, because the mean of its divisors is an integer number (801654192).

Almost surely, 2^6400088742 is an apocalyptic number.

6400088742 is an abundant number, since it is smaller than the sum of its proper divisors (6426378330).

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

6400088742 is a wasteful number, since it uses less digits than its factorization.

6400088742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190803.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 6400088742 is about 80000.5546355774. The cubic root of 6400088742 is about 1856.6441147362.

Adding to 6400088742 its reverse (2478800046), we get a palindrome (8878888788).

The spelling of 6400088742 in words is "six billion, four hundred million, eighty-eight thousand, seven hundred forty-two".