42291387782 has 16 divisors (see below), whose sum is σ = 72520150560. Its totient is φ = 18119723328.

The previous prime is 42291387773. The next prime is 42291387791. The reversal of 42291387782 is 28778319224.

42291387782 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 (42291387773) and next prime (42291387791).

It is a super-2 number, since 2×42291387782² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378593 + ... + 477404.

It is an arithmetic number, because the mean of its divisors is an integer number (4532509410).

Almost surely, 2^42291387782 is an apocalyptic number.

42291387782 is a deficient number, since it is larger than the sum of its proper divisors (30228762778).

42291387782 is a wasteful number, since it uses less digits than its factorization.

42291387782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859535.

The product of its digits is 2709504, while the sum is 53.

The spelling of 42291387782 in words is "forty-two billion, two hundred ninety-one million, three hundred eighty-seven thousand, seven hundred eighty-two".