143974 has 4 divisors (see below), whose sum is σ = 215964. Its totient is φ = 71986.

The previous prime is 143971. The next prime is 143977. The reversal of 143974 is 479341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 479341 = 29 ⋅16529.

It is an interprime number because it is at equal distance from previous prime (143971) and next prime (143977).

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 4² + 9⁴ + 3⁹ + 7⁶ + 4³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35992 + ... + 35995.

It is an arithmetic number, because the mean of its divisors is an integer number (53991).

2¹⁴³⁹⁷⁴ is an apocalyptic number.

143974 is a deficient number, since it is larger than the sum of its proper divisors (71990).

143974 is an equidigital number, since it uses as much as digits as its factorization.

143974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71989.

The product of its digits is 3024, while the sum is 28.

The square root of 143974 is about 379.4390596657. The cubic root of 143974 is about 52.4116730982.

The spelling of 143974 in words is "one hundred forty-three thousand, nine hundred seventy-four".