122402749 has 8 divisors (see below), whose sum is σ = 141173120. Its totient is φ = 103953456.

The previous prime is 122402747. The next prime is 122402759. The reversal of 122402749 is 947204221.

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

It is a cyclic number.

It is not a de Polignac number, because 122402749 - 2¹ = 122402747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122402749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122402743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79449 + ... + 80974.

It is an arithmetic number, because the mean of its divisors is an integer number (17646640).

Almost surely, 2^122402749 is an apocalyptic number.

It is an amenable number.

122402749 is a deficient number, since it is larger than the sum of its proper divisors (18770371).

122402749 is a wasteful number, since it uses less digits than its factorization.

122402749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160539.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 122402749 is about 11063.5775859348. The cubic root of 122402749 is about 496.5127331515.

The spelling of 122402749 in words is "one hundred twenty-two million, four hundred two thousand, seven hundred forty-nine".