78201743 has 4 divisors (see below), whose sum is σ = 79303248. Its totient is φ = 77100240.

The previous prime is 78201733. The next prime is 78201769. The reversal of 78201743 is 34710287.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34710287 = 109 ⋅318443.

It is a cyclic number.

It is not a de Polignac number, because 78201743 - 2¹⁸ = 77939599 is a prime.

It is a super-2 number, since 2×78201743² = 12231025216476098, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78201733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550646 + ... + 550787.

It is an arithmetic number, because the mean of its divisors is an integer number (19825812).

Almost surely, 2^78201743 is an apocalyptic number.

78201743 is a deficient number, since it is larger than the sum of its proper divisors (1101505).

78201743 is a wasteful number, since it uses less digits than its factorization.

78201743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101504.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 78201743 is about 8843.1749389006. The cubic root of 78201743 is about 427.6339181235.

The spelling of 78201743 in words is "seventy-eight million, two hundred one thousand, seven hundred forty-three".