143409542 has 4 divisors (see below), whose sum is σ = 215114316. Its totient is φ = 71704770.

The previous prime is 143409533. The next prime is 143409551. The reversal of 143409542 is 245904341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 245904341 = 14143 ⋅17387.

It is an interprime number because it is at equal distance from previous prime (143409533) and next prime (143409551).

It is a junction number, because it is equal to n+sod(n) for n = 143409499 and 143409508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35852384 + ... + 35852387.

It is an arithmetic number, because the mean of its divisors is an integer number (53778579).

Almost surely, 2^143409542 is an apocalyptic number.

143409542 is a deficient number, since it is larger than the sum of its proper divisors (71704774).

143409542 is an equidigital number, since it uses as much as digits as its factorization.

143409542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71704773.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 143409542 is about 11975.3723115400. The cubic root of 143409542 is about 523.4308910674.

The spelling of 143409542 in words is "one hundred forty-three million, four hundred nine thousand, five hundred forty-two".