261429063 has 24 divisors (see below), whose sum is σ = 423116928. Its totient is φ = 142891056.

The previous prime is 261429061. The next prime is 261429071. The reversal of 261429063 is 360924162.

It is not a de Polignac number, because 261429063 - 2¹ = 261429061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261429061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35281 + ... + 42042.

It is an arithmetic number, because the mean of its divisors is an integer number (17629872).

Almost surely, 2^261429063 is an apocalyptic number.

261429063 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

261429063 is a deficient number, since it is larger than the sum of its proper divisors (161687865).

261429063 is a wasteful number, since it uses less digits than its factorization.

261429063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77363 (or 77356 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 261429063 is about 16168.7681348951. The cubic root of 261429063 is about 639.4176530532.

The spelling of 261429063 in words is "two hundred sixty-one million, four hundred twenty-nine thousand, sixty-three".