143261442 has 24 divisors (see below), whose sum is σ = 311036544. Its totient is φ = 47655864.

The previous prime is 143261413. The next prime is 143261449. The reversal of 143261442 is 244162341.

It is a happy number.

143261442 is a `hidden beast` number, since 1 + 4 + 3 + 2 + 614 + 42 = 666.

It is not an unprimeable number, because it can be changed into a prime (143261449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1143 + ... + 16965.

It is an arithmetic number, because the mean of its divisors is an integer number (12959856).

Almost surely, 2^143261442 is an apocalyptic number.

143261442 is an abundant number, since it is smaller than the sum of its proper divisors (167775102).

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

143261442 is a wasteful number, since it uses less digits than its factorization.

143261442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16334 (or 16331 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 143261442 is about 11969.1871904486. The cubic root of 143261442 is about 523.2506454705.

The spelling of 143261442 in words is "one hundred forty-three million, two hundred sixty-one thousand, four hundred forty-two".