127440401 has 8 divisors (see below), whose sum is σ = 145070784. Its totient is φ = 110817520.

The previous prime is 127440371. The next prime is 127440419. The reversal of 127440401 is 104044721.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-127440401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127440421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251606 + ... + 252111.

It is an arithmetic number, because the mean of its divisors is an integer number (18133848).

Almost surely, 2^127440401 is an apocalyptic number.

127440401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

127440401 is a deficient number, since it is larger than the sum of its proper divisors (17630383).

127440401 is a wasteful number, since it uses less digits than its factorization.

127440401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503751.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 127440401 is about 11288.9503940800. The cubic root of 127440401 is about 503.2329194112.

The spelling of 127440401 in words is "one hundred twenty-seven million, four hundred forty thousand, four hundred one".