2721257429 has 4 divisors (see below), whose sum is σ = 2968644480. Its totient is φ = 2473870380.

The previous prime is 2721257423. The next prime is 2721257437. The reversal of 2721257429 is 9247521272.

2721257429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-2721257429 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 (2721257423) 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, 123693509 + ... + 123693530.

It is an arithmetic number, because the mean of its divisors is an integer number (742161120).

Almost surely, 2^2721257429 is an apocalyptic number.

It is an amenable number.

2721257429 is a deficient number, since it is larger than the sum of its proper divisors (247387051).

2721257429 is a wasteful number, since it uses less digits than its factorization.

2721257429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247387050.

The product of its digits is 141120, while the sum is 41.

The square root of 2721257429 is about 52165.6728989476. The cubic root of 2721257429 is about 1396.1214808023.

The spelling of 2721257429 in words is "two billion, seven hundred twenty-one million, two hundred fifty-seven thousand, four hundred twenty-nine".