4029257261 has 8 divisors (see below), whose sum is σ = 4278938040. Its totient is φ = 3780983808.

The previous prime is 4029257257. The next prime is 4029257291. The reversal of 4029257261 is 1627529204.

It can be written as a sum of positive squares in 4 ways, for example, as 1753013161 + 2276244100 = 41869^2 + 47710^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4029257261 - 2² = 4029257257 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 (4029257201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345926 + ... + 357383.

It is an arithmetic number, because the mean of its divisors is an integer number (534867255).

Almost surely, 2^4029257261 is an apocalyptic number.

It is an amenable number.

4029257261 is a deficient number, since it is larger than the sum of its proper divisors (249680779).

4029257261 is a wasteful number, since it uses less digits than its factorization.

4029257261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703663.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 4029257261 is about 63476.4307518940. The cubic root of 4029257261 is about 1591.2619046223.

The spelling of 4029257261 in words is "four billion, twenty-nine million, two hundred fifty-seven thousand, two hundred sixty-one".