143420774 has 16 divisors (see below), whose sum is σ = 246228000. Its totient is φ = 61375104.

The previous prime is 143420773. The next prime is 143420887. The reversal of 143420774 is 477024341.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 143420774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143420773) 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 7 ways as a sum of consecutive naturals, for example, 2702 + ... + 17150.

It is an arithmetic number, because the mean of its divisors is an integer number (15389250).

Almost surely, 2^143420774 is an apocalyptic number.

143420774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

143420774 is a deficient number, since it is larger than the sum of its proper divisors (102807226).

143420774 is a wasteful number, since it uses less digits than its factorization.

143420774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15167.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 143420774 is about 11975.8412648131. The cubic root of 143420774 is about 523.4445559468. Note that the first 3 decimals are identical.

The spelling of 143420774 in words is "one hundred forty-three million, four hundred twenty thousand, seven hundred seventy-four".