742420186 has 8 divisors (see below), whose sum is σ = 1114534260. Its totient is φ = 370908768.

The previous prime is 742420183. The next prime is 742420201. The reversal of 742420186 is 681024247.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 727326961 + 15093225 = 26969^2 + 3885^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (742420181) 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, 147571 + ... + 152518.

Almost surely, 2^742420186 is an apocalyptic number.

742420186 is a deficient number, since it is larger than the sum of its proper divisors (372114074).

742420186 is a wasteful number, since it uses less digits than its factorization.

742420186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301328.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 742420186 is about 27247.3886088190. The cubic root of 742420186 is about 905.4891634303.

The spelling of 742420186 in words is "seven hundred forty-two million, four hundred twenty thousand, one hundred eighty-six".