122662391 has 4 divisors (see below), whose sum is σ = 123853392. Its totient is φ = 121471392.

The previous prime is 122662367. The next prime is 122662403. The reversal of 122662391 is 193266221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 122662391 - 2¹⁰ = 122661367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122662321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595346 + ... + 595551.

It is an arithmetic number, because the mean of its divisors is an integer number (30963348).

Almost surely, 2^122662391 is an apocalyptic number.

122662391 is a deficient number, since it is larger than the sum of its proper divisors (1191001).

122662391 is a wasteful number, since it uses less digits than its factorization.

122662391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191000.

The product of its digits is 7776, while the sum is 32.

The square root of 122662391 is about 11075.3054585415. The cubic root of 122662391 is about 496.8635545588.

The spelling of 122662391 in words is "one hundred twenty-two million, six hundred sixty-two thousand, three hundred ninety-one".