120400071 has 8 divisors (see below), whose sum is σ = 175127424. Its totient is φ = 72969720.

The previous prime is 120400051. The next prime is 120400073. The reversal of 120400071 is 170004021.

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

It is not a de Polignac number, because 120400071 - 2¹⁹ = 119875783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120400071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120400073) 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, 1824211 + ... + 1824276.

It is an arithmetic number, because the mean of its divisors is an integer number (21890928).

Almost surely, 2^120400071 is an apocalyptic number.

120400071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120400071 is a deficient number, since it is larger than the sum of its proper divisors (54727353).

120400071 is a wasteful number, since it uses less digits than its factorization.

120400071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648501.

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 120400071 is about 10972.6966147798. The cubic root of 120400071 is about 493.7899512404.

Adding to 120400071 its reverse (170004021), we get a palindrome (290404092).

The spelling of 120400071 in words is "one hundred twenty million, four hundred thousand, seventy-one".