747143146 has 16 divisors (see below), whose sum is σ = 1177776864. Its totient is φ = 355020624.

The previous prime is 747143143. The next prime is 747143147. The reversal of 747143146 is 641341747.

It is a happy number.

It is a super-2 number, since 2×747143146² = 1116445761229554632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (747143141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114220 + ... + 120583.

It is an arithmetic number, because the mean of its divisors is an integer number (73611054).

Almost surely, 2^747143146 is an apocalyptic number.

747143146 is a deficient number, since it is larger than the sum of its proper divisors (430633718).

747143146 is a wasteful number, since it uses less digits than its factorization.

747143146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234885.

The product of its digits is 56448, while the sum is 37.

The square root of 747143146 is about 27333.9193311168. The cubic root of 747143146 is about 907.4052178354.

The spelling of 747143146 in words is "seven hundred forty-seven million, one hundred forty-three thousand, one hundred forty-six".