1071400457 has 4 divisors (see below), whose sum is σ = 1076839236. Its totient is φ = 1065961680.

The previous prime is 1071400441. The next prime is 1071400471. The reversal of 1071400457 is 7540041701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 999761161 + 71639296 = 31619^2 + 8464^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071400457 - 2⁴ = 1071400441 is a prime.

It is a super-2 number, since 2×1071400457² = 2295797878519617698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1071405457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2719094 + ... + 2719487.

It is an arithmetic number, because the mean of its divisors is an integer number (269209809).

Almost surely, 2^1071400457 is an apocalyptic number.

It is an amenable number.

1071400457 is a deficient number, since it is larger than the sum of its proper divisors (5438779).

1071400457 is an equidigital number, since it uses as much as digits as its factorization.

1071400457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438778.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 1071400457 is about 32732.2540775914. The cubic root of 1071400457 is about 1023.2551578200.

The spelling of 1071400457 in words is "one billion, seventy-one million, four hundred thousand, four hundred fifty-seven".