122247142 has 4 divisors (see below), whose sum is σ = 183370716. Its totient is φ = 61123570.

The previous prime is 122247137. The next prime is 122247143. The reversal of 122247142 is 241742221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241742221 = 7 ⋅34534603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122247143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30561784 + ... + 30561787.

It is an arithmetic number, because the mean of its divisors is an integer number (45842679).

Almost surely, 2^122247142 is an apocalyptic number.

122247142 is a deficient number, since it is larger than the sum of its proper divisors (61123574).

122247142 is an equidigital number, since it uses as much as digits as its factorization.

122247142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61123573.

The product of its digits is 1792, while the sum is 25.

The square root of 122247142 is about 11056.5429497651. The cubic root of 122247142 is about 496.3022432716.

Adding to 122247142 its reverse (241742221), we get a palindrome (363989363).

The spelling of 122247142 in words is "one hundred twenty-two million, two hundred forty-seven thousand, one hundred forty-two".