122143005 has 64 divisors (see below), whose sum is σ = 226955520. Its totient is φ = 62270208.

The previous prime is 122143003. The next prime is 122143019. The reversal of 122143005 is 500341221.

It is not a de Polignac number, because 122143005 - 2¹ = 122143003 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122143003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 307467 + ... + 307863.

It is an arithmetic number, because the mean of its divisors is an integer number (3546180).

Almost surely, 2^122143005 is an apocalyptic number.

122143005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122143005 is a deficient number, since it is larger than the sum of its proper divisors (104812515).

122143005 is a wasteful number, since it uses less digits than its factorization.

122143005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 122143005 is about 11051.8326534562. The cubic root of 122143005 is about 496.1612771696.

Adding to 122143005 its reverse (500341221), we get a palindrome (622484226).

The spelling of 122143005 in words is "one hundred twenty-two million, one hundred forty-three thousand, five".