400154127 has 4 divisors (see below), whose sum is σ = 533538840. Its totient is φ = 266769416.

The previous prime is 400154119. The next prime is 400154129. The reversal of 400154127 is 721451004.

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 400154127 - 2³ = 400154119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400154097 and 400154106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400154129) 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 3 ways as a sum of consecutive naturals, for example, 66692352 + ... + 66692357.

It is an arithmetic number, because the mean of its divisors is an integer number (133384710).

Almost surely, 2^400154127 is an apocalyptic number.

400154127 is a deficient number, since it is larger than the sum of its proper divisors (133384713).

400154127 is a wasteful number, since it uses less digits than its factorization.

400154127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133384712.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 400154127 is about 20003.8528038976. The cubic root of 400154127 is about 736.9009223630.

The spelling of 400154127 in words is "four hundred million, one hundred fifty-four thousand, one hundred twenty-seven".