122143442 has 4 divisors (see below), whose sum is σ = 183215166. Its totient is φ = 61071720.

The previous prime is 122143433. The next prime is 122143451. The reversal of 122143442 is 244341221.

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

It is an interprime number because it is at equal distance from previous prime (122143433) and next prime (122143451).

It can be written as a sum of positive squares in only one way, i.e., 115326121 + 6817321 = 10739^2 + 2611^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30535859 + ... + 30535862.

Almost surely, 2^122143442 is an apocalyptic number.

122143442 is a deficient number, since it is larger than the sum of its proper divisors (61071724).

122143442 is an equidigital number, since it uses as much as digits as its factorization.

122143442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61071723.

The product of its digits is 1536, while the sum is 23.

The square root of 122143442 is about 11051.8524239152. The cubic root of 122143442 is about 496.1618688864.

Adding to 122143442 its reverse (244341221), we get a palindrome (366484663).

The spelling of 122143442 in words is "one hundred twenty-two million, one hundred forty-three thousand, four hundred forty-two".