122345642 has 4 divisors (see below), whose sum is σ = 183518466. Its totient is φ = 61172820.

The previous prime is 122345627. The next prime is 122345647. The reversal of 122345642 is 246543221.

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., 66080641 + 56265001 = 8129^2 + 7501^2 .

It is a super-2 number, since 2×122345642² = 29936912232784328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122345647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30586409 + ... + 30586412.

Almost surely, 2^122345642 is an apocalyptic number.

122345642 is a deficient number, since it is larger than the sum of its proper divisors (61172824).

122345642 is an equidigital number, since it uses as much as digits as its factorization.

122345642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61172823.

The product of its digits is 11520, while the sum is 29.

The square root of 122345642 is about 11060.9964288937. The cubic root of 122345642 is about 496.4355051383.

Adding to 122345642 its reverse (246543221), we get a palindrome (368888863).

The spelling of 122345642 in words is "one hundred twenty-two million, three hundred forty-five thousand, six hundred forty-two".