261430202 has 16 divisors (see below), whose sum is σ = 432604800. Its totient is φ = 117495840.

The previous prime is 261430189. The next prime is 261430219. The reversal of 261430202 is 202034162.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64802 + ... + 68717.

It is an arithmetic number, because the mean of its divisors is an integer number (27037800).

Almost surely, 2^261430202 is an apocalyptic number.

261430202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261430202 is a deficient number, since it is larger than the sum of its proper divisors (171174598).

261430202 is a wasteful number, since it uses less digits than its factorization.

261430202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133621.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 261430202 is about 16168.8033570824. The cubic root of 261430202 is about 639.4185816616.

Adding to 261430202 its reverse (202034162), we get a palindrome (463464364).

The spelling of 261430202 in words is "two hundred sixty-one million, four hundred thirty thousand, two hundred two".