1072400071 has 8 divisors (see below), whose sum is σ = 1141527600. Its totient is φ = 1004541120.

The previous prime is 1072400027. The next prime is 1072400101. The reversal of 1072400071 is 1700042701.

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

It is a cyclic number.

It is not a de Polignac number, because 1072400071 - 2⁷ = 1072399943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072400011) 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, 315400 + ... + 318781.

It is an arithmetic number, because the mean of its divisors is an integer number (142690950).

Almost surely, 2^1072400071 is an apocalyptic number.

1072400071 is a deficient number, since it is larger than the sum of its proper divisors (69127529).

1072400071 is an equidigital number, since it uses as much as digits as its factorization.

1072400071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634289.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 1072400071 is about 32747.5200740453. The cubic root of 1072400071 is about 1023.5732904195.

Adding to 1072400071 its reverse (1700042701), we get a palindrome (2772442772).

The spelling of 1072400071 in words is "one billion, seventy-two million, four hundred thousand, seventy-one".