82637242 has 4 divisors (see below), whose sum is σ = 123955866. Its totient is φ = 41318620.

The previous prime is 82637231. The next prime is 82637279. The reversal of 82637242 is 24273628.

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

It can be written as a sum of positive squares in only one way, i.e., 56535361 + 26101881 = 7519^2 + 5109^2 .

It is a junction number, because it is equal to n+sod(n) for n = 82637198 and 82637207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20659309 + ... + 20659312.

Almost surely, 2^82637242 is an apocalyptic number.

82637242 is a deficient number, since it is larger than the sum of its proper divisors (41318624).

82637242 is a wasteful number, since it uses less digits than its factorization.

82637242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41318623.

The product of its digits is 32256, while the sum is 34.

The square root of 82637242 is about 9090.5028463776. The cubic root of 82637242 is about 435.5706466853.

The spelling of 82637242 in words is "eighty-two million, six hundred thirty-seven thousand, two hundred forty-two".