122491406 has 8 divisors (see below), whose sum is σ = 185631600. Its totient is φ = 60614208.

The previous prime is 122491381. The next prime is 122491429. The reversal of 122491406 is 604194221.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315506 + ... + 315893.

It is an arithmetic number, because the mean of its divisors is an integer number (23203950).

Almost surely, 2^122491406 is an apocalyptic number.

122491406 is a deficient number, since it is larger than the sum of its proper divisors (63140194).

122491406 is an equidigital number, since it uses as much as digits as its factorization.

122491406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631498.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 122491406 is about 11067.5835664340. The cubic root of 122491406 is about 496.6325798767.

The spelling of 122491406 in words is "one hundred twenty-two million, four hundred ninety-one thousand, four hundred six".