3642742 has 4 divisors (see below), whose sum is σ = 5464116. Its totient is φ = 1821370.

The previous prime is 3642739. The next prime is 3642791. The reversal of 3642742 is 2472463.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3642742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 910684 + ... + 910687.

It is an arithmetic number, because the mean of its divisors is an integer number (1366029).

Almost surely, 2^3642742 is an apocalyptic number.

3642742 is a deficient number, since it is larger than the sum of its proper divisors (1821374).

3642742 is a wasteful number, since it uses less digits than its factorization.

3642742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821373.

The product of its digits is 8064, while the sum is 28.

The square root of 3642742 is about 1908.5968668108. The cubic root of 3642742 is about 153.8660498243.

It can be divided in two parts, 36 and 42742, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 3642742 in words is "three million, six hundred forty-two thousand, seven hundred forty-two".