122127643 has 24 divisors (see below), whose sum is σ = 145134864. Its totient is φ = 101836800.

The previous prime is 122127641. The next prime is 122127661. The reversal of 122127643 is 346721221.

It is not a de Polignac number, because 122127643 - 2¹ = 122127641 is a prime.

It is a super-2 number, since 2×122127643² = 29830322369470898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122127641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129871 + ... + 130807.

It is an arithmetic number, because the mean of its divisors is an integer number (6047286).

Almost surely, 2^122127643 is an apocalyptic number.

122127643 is a deficient number, since it is larger than the sum of its proper divisors (23007221).

122127643 is a wasteful number, since it uses less digits than its factorization.

122127643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1006 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 122127643 is about 11051.1376337461. The cubic root of 122127643 is about 496.1404754623.

Adding to 122127643 its reverse (346721221), we get a palindrome (468848864).

It can be divided in two parts, 122 and 127643, that added together give a triangular number (127765 = T₅₀₅).

The spelling of 122127643 in words is "one hundred twenty-two million, one hundred twenty-seven thousand, six hundred forty-three".