720240049 has 4 divisors (see below), whose sum is σ = 758147440. Its totient is φ = 682332660.

The previous prime is 720240043. The next prime is 720240061. The reversal of 720240049 is 940042027.

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, and also an emirpimes, since its reverse is a distinct semiprime: 940042027 = 163 ⋅5767129.

It is a cyclic number.

It is not a de Polignac number, because 720240049 - 2³ = 720240041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720239999 and 720240026.

It is not an unprimeable number, because it can be changed into a prime (720240041) 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, 18953667 + ... + 18953704.

It is an arithmetic number, because the mean of its divisors is an integer number (189536860).

Almost surely, 2^720240049 is an apocalyptic number.

It is an amenable number.

720240049 is a deficient number, since it is larger than the sum of its proper divisors (37907391).

720240049 is a wasteful number, since it uses less digits than its factorization.

720240049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37907390.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 720240049 is about 26837.2884062455. The cubic root of 720240049 is about 896.3805453482.

The spelling of 720240049 in words is "seven hundred twenty million, two hundred forty thousand, forty-nine".