1340771421 has 16 divisors (see below), whose sum is σ = 2013124608. Its totient is φ = 786375600.

The previous prime is 1340771387. The next prime is 1340771429. The reversal of 1340771421 is 1241770431.

It is not a de Polignac number, because 1340771421 - 2¹¹ = 1340769373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340771429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654291 + ... + 656336.

It is an arithmetic number, because the mean of its divisors is an integer number (125820288).

Almost surely, 2^1340771421 is an apocalyptic number.

1340771421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1340771421 is a deficient number, since it is larger than the sum of its proper divisors (672353187).

1340771421 is a wasteful number, since it uses less digits than its factorization.

1340771421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310672.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 1340771421 is about 36616.5457273075. The cubic root of 1340771421 is about 1102.6852909198.

The spelling of 1340771421 in words is "one billion, three hundred forty million, seven hundred seventy-one thousand, four hundred twenty-one".