1400271257 has 32 divisors (see below), whose sum is σ = 1849042944. Its totient is φ = 1028016000.

The previous prime is 1400271239. The next prime is 1400271259. The reversal of 1400271257 is 7521720041.

It is not a de Polignac number, because 1400271257 - 2⁶ = 1400271193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1400271259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112757 + ... + 124557.

It is an arithmetic number, because the mean of its divisors is an integer number (57782592).

Almost surely, 2^1400271257 is an apocalyptic number.

It is an amenable number.

1400271257 is a deficient number, since it is larger than the sum of its proper divisors (448771687).

1400271257 is a wasteful number, since it uses less digits than its factorization.

1400271257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11909.

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

The square root of 1400271257 is about 37420.1985163093. The cubic root of 1400271257 is about 1118.7611879409.

Adding to 1400271257 its reverse (7521720041), we get a palindrome (8921991298).

The spelling of 1400271257 in words is "one billion, four hundred million, two hundred seventy-one thousand, two hundred fifty-seven".