127213406 has 8 divisors (see below), whose sum is σ = 195474384. Its totient is φ = 62055280.

The previous prime is 127213403. The next prime is 127213433. The reversal of 127213406 is 604312721.

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

It is a super-2 number, since 2×127213406² = 32366501332241672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127213403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775610 + ... + 775773.

It is an arithmetic number, because the mean of its divisors is an integer number (24434298).

Almost surely, 2^127213406 is an apocalyptic number.

127213406 is a deficient number, since it is larger than the sum of its proper divisors (68260978).

127213406 is a wasteful number, since it uses less digits than its factorization.

127213406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551426.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 127213406 is about 11278.8920555168. The cubic root of 127213406 is about 502.9339581052.

The spelling of 127213406 in words is "one hundred twenty-seven million, two hundred thirteen thousand, four hundred six".