7742402 has 4 divisors (see below), whose sum is σ = 11613606. Its totient is φ = 3871200.

The previous prime is 7742401. The next prime is 7742411. The reversal of 7742402 is 2042477.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7612081 + 130321 = 2759^2 + 361^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7742401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935599 + ... + 1935602.

Almost surely, 2^7742402 is an apocalyptic number.

7742402 is a deficient number, since it is larger than the sum of its proper divisors (3871204).

7742402 is a wasteful number, since it uses less digits than its factorization.

7742402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871203.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 7742402 is about 2782.5172056970. The cubic root of 7742402 is about 197.8298882405.

Adding to 7742402 its reverse (2042477), we get a palindrome (9784879).

The spelling of 7742402 in words is "seven million, seven hundred forty-two thousand, four hundred two".