122520142 has 8 divisors (see below), whose sum is σ = 185466600. Its totient is φ = 60697944.

The previous prime is 122520127. The next prime is 122520143. The reversal of 122520142 is 241025221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×122520142² = 30022370391400328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122520143) 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, 280792 + ... + 281227.

It is an arithmetic number, because the mean of its divisors is an integer number (23183325).

Almost surely, 2^122520142 is an apocalyptic number.

122520142 is a deficient number, since it is larger than the sum of its proper divisors (62946458).

122520142 is a wasteful number, since it uses less digits than its factorization.

122520142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562130.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 122520142 is about 11068.8816959980. The cubic root of 122520142 is about 496.6714128540.

Adding to 122520142 its reverse (241025221), we get a palindrome (363545363).

The spelling of 122520142 in words is "one hundred twenty-two million, five hundred twenty thousand, one hundred forty-two".