148857143 has 4 divisors (see below), whose sum is σ = 148886928. Its totient is φ = 148827360.

The previous prime is 148857139. The next prime is 148857157. The reversal of 148857143 is 341758841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 148857143 - 2² = 148857139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148857143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148857193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5363 + ... + 18068.

It is an arithmetic number, because the mean of its divisors is an integer number (37221732).

Almost surely, 2^148857143 is an apocalyptic number.

148857143 is a deficient number, since it is larger than the sum of its proper divisors (29785).

148857143 is an equidigital number, since it uses as much as digits as its factorization.

148857143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29784.

The product of its digits is 107520, while the sum is 41.

The square root of 148857143 is about 12200.7025617380. The cubic root of 148857143 is about 529.9764354066.

The spelling of 148857143 in words is "one hundred forty-eight million, eight hundred fifty-seven thousand, one hundred forty-three".