1740135221 has 4 divisors (see below), whose sum is σ = 1898329344. Its totient is φ = 1581941100.

The previous prime is 1740135217. The next prime is 1740135247. The reversal of 1740135221 is 1225310471.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1740135221 - 2² = 1740135217 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 (1740135211) 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, 79097045 + ... + 79097066.

It is an arithmetic number, because the mean of its divisors is an integer number (474582336).

Almost surely, 2^1740135221 is an apocalyptic number.

1740135221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1740135221 is a deficient number, since it is larger than the sum of its proper divisors (158194123).

1740135221 is a wasteful number, since it uses less digits than its factorization.

1740135221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158194122.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 1740135221 is about 41714.9280354168. The cubic root of 1740135221 is about 1202.8025287007.

Adding to 1740135221 its reverse (1225310471), we get a palindrome (2965445692).

The spelling of 1740135221 in words is "one billion, seven hundred forty million, one hundred thirty-five thousand, two hundred twenty-one".