3445642 has 4 divisors (see below), whose sum is σ = 5168466. Its totient is φ = 1722820.

The previous prime is 3445639. The next prime is 3445643. The reversal of 3445642 is 2465443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2465443 = 139 ⋅17737.

It can be written as a sum of positive squares in only one way, i.e., 2277081 + 1168561 = 1509^2 + 1081^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3445642.

It is not an unprimeable number, because it can be changed into a prime (3445643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861409 + ... + 861412.

Almost surely, 2^3445642 is an apocalyptic number.

3445642 is a deficient number, since it is larger than the sum of its proper divisors (1722824).

3445642 is a wasteful number, since it uses less digits than its factorization.

3445642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722823.

The product of its digits is 11520, while the sum is 28.

The square root of 3445642 is about 1856.2440572295. The cubic root of 3445642 is about 151.0393301348.

The spelling of 3445642 in words is "three million, four hundred forty-five thousand, six hundred forty-two".