7742142 has 20 divisors (see below), whose sum is σ = 17348496. Its totient is φ = 2580660.

The previous prime is 7742131. The next prime is 7742143. The reversal of 7742142 is 2412477.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7742143) 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 9 ways as a sum of consecutive naturals, for example, 23734 + ... + 24057.

Almost surely, 2^7742142 is an apocalyptic number.

7742142 is an abundant number, since it is smaller than the sum of its proper divisors (9606354).

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

7742142 is a wasteful number, since it uses less digits than its factorization.

7742142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47805 (or 47796 counting only the distinct ones).

The product of its digits is 3136, while the sum is 27.

The square root of 7742142 is about 2782.4704850187. The cubic root of 7742142 is about 197.8276737535.

It can be divided in two parts, 774 and 2142, that added together give a square (2916 = 54²).

The spelling of 7742142 in words is "seven million, seven hundred forty-two thousand, one hundred forty-two".