740113021 has 16 divisors (see below), whose sum is σ = 786728448. Its totient is φ = 694782000.

The previous prime is 740113013. The next prime is 740113027. The reversal of 740113021 is 120311047.

It is a cyclic number.

It is not a de Polignac number, because 740113021 - 2³ = 740113013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 740113021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740113027) 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 15 ways as a sum of consecutive naturals, for example, 509346 + ... + 510796.

It is an arithmetic number, because the mean of its divisors is an integer number (49170528).

Almost surely, 2^740113021 is an apocalyptic number.

It is an amenable number.

740113021 is a deficient number, since it is larger than the sum of its proper divisors (46615427).

740113021 is a wasteful number, since it uses less digits than its factorization.

740113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 740113021 is about 27205.0183054524. The cubic root of 740113021 is about 904.5502159401.

Adding to 740113021 its reverse (120311047), we get a palindrome (860424068).

It can be divided in two parts, 74011 and 3021, that multiplied together give a triangular number (223587231 = T₂₁₁₄₆).

The spelling of 740113021 in words is "seven hundred forty million, one hundred thirteen thousand, twenty-one".