74142243 has 24 divisors (see below), whose sum is σ = 127775760. Its totient is φ = 42366240.

The previous prime is 74142239. The next prime is 74142259. The reversal of 74142243 is 34224147.

74142243 is a `hidden beast` number, since 7 + 414 + 2 + 243 = 666.

It is not a de Polignac number, because 74142243 - 2² = 74142239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (74142203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26698 + ... + 29343.

It is an arithmetic number, because the mean of its divisors is an integer number (5323990).

Almost surely, 2^74142243 is an apocalyptic number.

74142243 is a deficient number, since it is larger than the sum of its proper divisors (53633517).

74142243 is a wasteful number, since it uses less digits than its factorization.

74142243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56064 (or 56051 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 74142243 is about 8610.5890042436. The cubic root of 74142243 is about 420.1024749953.

The spelling of 74142243 in words is "seventy-four million, one hundred forty-two thousand, two hundred forty-three".