122600642 has 4 divisors (see below), whose sum is σ = 183900966. Its totient is φ = 61300320.

The previous prime is 122600633. The next prime is 122600663. The reversal of 122600642 is 246006221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246006221 = 491 ⋅501031.

It can be written as a sum of positive squares in only one way, i.e., 65431921 + 57168721 = 8089^2 + 7561^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30650159 + ... + 30650162.

Almost surely, 2^122600642 is an apocalyptic number.

122600642 is a deficient number, since it is larger than the sum of its proper divisors (61300324).

122600642 is an equidigital number, since it uses as much as digits as its factorization.

122600642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61300323.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 122600642 is about 11072.5174192683. The cubic root of 122600642 is about 496.7801658441.

Adding to 122600642 its reverse (246006221), we get a palindrome (368606863).

The spelling of 122600642 in words is "one hundred twenty-two million, six hundred thousand, six hundred forty-two".