1271400087 has 8 divisors (see below), whose sum is σ = 1696799104. Its totient is φ = 846800568.

The previous prime is 1271400083. The next prime is 1271400101. The reversal of 1271400087 is 7800041721.

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

It is not a de Polignac number, because 1271400087 - 2² = 1271400083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271400083) 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, 196153 + ... + 202530.

It is an arithmetic number, because the mean of its divisors is an integer number (212099888).

Almost surely, 2^1271400087 is an apocalyptic number.

1271400087 is a deficient number, since it is larger than the sum of its proper divisors (425399017).

1271400087 is a wasteful number, since it uses less digits than its factorization.

1271400087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399749.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 1271400087 is about 35656.6976457439. The cubic root of 1271400087 is about 1083.3299392293.

The spelling of 1271400087 in words is "one billion, two hundred seventy-one million, four hundred thousand, eighty-seven".