740136321 has 12 divisors (see below), whose sum is σ = 1069630848. Its totient is φ = 493172664.

The previous prime is 740136301. The next prime is 740136323. The reversal of 740136321 is 123631047.

It is not a de Polignac number, because 740136321 - 2¹⁹ = 739612033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (740136323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1365 + ... + 38498.

It is an arithmetic number, because the mean of its divisors is an integer number (89135904).

Almost surely, 2^740136321 is an apocalyptic number.

It is an amenable number.

740136321 is a deficient number, since it is larger than the sum of its proper divisors (329494527).

740136321 is a wasteful number, since it uses less digits than its factorization.

740136321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41932 (or 41929 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 740136321 is about 27205.4465318987. The cubic root of 740136321 is about 904.5597080934.

Adding to 740136321 its reverse (123631047), we get a palindrome (863767368).

The spelling of 740136321 in words is "seven hundred forty million, one hundred thirty-six thousand, three hundred twenty-one".