679429242 has 64 divisors (see below), whose sum is σ = 1613831040. Its totient is φ = 211131648.

The previous prime is 679429241. The next prime is 679429243. The reversal of 679429242 is 242924976.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (679429241) and next prime (679429243).

It is not an unprimeable number, because it can be changed into a prime (679429241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94768 + ... + 101684.

It is an arithmetic number, because the mean of its divisors is an integer number (25216110).

Almost surely, 2^679429242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679429242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806915520).

679429242 is an abundant number, since it is smaller than the sum of its proper divisors (934401798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679429242 is a wasteful number, since it uses less digits than its factorization.

679429242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7052 (or 7046 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 679429242 is about 26065.8635383522. The cubic root of 679429242 is about 879.1198336315.

The spelling of 679429242 in words is "six hundred seventy-nine million, four hundred twenty-nine thousand, two hundred forty-two".