263142378 has 32 divisors (see below), whose sum is σ = 597208320. Its totient is φ = 85847040.

The previous prime is 263142367. The next prime is 263142389. The reversal of 263142378 is 873241362.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (263142367) and next prime (263142389).

It is a super-2 number, since 2×263142378² = 138487822198989768, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49303 + ... + 54378.

It is an arithmetic number, because the mean of its divisors is an integer number (18662760).

Almost surely, 2^263142378 is an apocalyptic number.

263142378 is an abundant number, since it is smaller than the sum of its proper divisors (334065942).

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

263142378 is a wasteful number, since it uses less digits than its factorization.

263142378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103739 (or 103733 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 263142378 is about 16221.6638480767. The cubic root of 263142378 is about 640.8114528245.

The spelling of 263142378 in words is "two hundred sixty-three million, one hundred forty-two thousand, three hundred seventy-eight".