259742420 has 24 divisors (see below), whose sum is σ = 623382144. Its totient is φ = 89054496.

The previous prime is 259742383. The next prime is 259742423. The reversal of 259742420 is 24247952.

It is a super-2 number, since 2×259742420² = 134932249494912800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259742423) 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, 927512 + ... + 927791.

It is an arithmetic number, because the mean of its divisors is an integer number (25974256).

Almost surely, 2^259742420 is an apocalyptic number.

259742420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

259742420 is an abundant number, since it is smaller than the sum of its proper divisors (363639724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259742420 is a wasteful number, since it uses less digits than its factorization.

259742420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855319 (or 1855317 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 259742420 is about 16116.5263006642. The cubic root of 259742420 is about 638.0395903145.

The spelling of 259742420 in words is "two hundred fifty-nine million, seven hundred forty-two thousand, four hundred twenty".