76420019 has 4 divisors (see below), whose sum is σ = 82298496. Its totient is φ = 70541544.

The previous prime is 76420013. The next prime is 76420021. The reversal of 76420019 is 91002467.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76420019 is a prime.

It is a super-2 number, since 2×76420019² = 11680038607920722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 76419973 and 76420000.

It is not an unprimeable number, because it can be changed into a prime (76420013) 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, 2939219 + ... + 2939244.

It is an arithmetic number, because the mean of its divisors is an integer number (20574624).

Almost surely, 2^76420019 is an apocalyptic number.

76420019 is a deficient number, since it is larger than the sum of its proper divisors (5878477).

76420019 is a wasteful number, since it uses less digits than its factorization.

76420019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5878476.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 76420019 is about 8741.8544371317. The cubic root of 76420019 is about 424.3612439192.

The spelling of 76420019 in words is "seventy-six million, four hundred twenty thousand, nineteen".