406201642 has 16 divisors (see below), whose sum is σ = 759650112. Its totient is φ = 158260320.

The previous prime is 406201633. The next prime is 406201661. The reversal of 406201642 is 246102604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1318683 + ... + 1318990.

It is an arithmetic number, because the mean of its divisors is an integer number (47478132).

Almost surely, 2^406201642 is an apocalyptic number.

406201642 is a deficient number, since it is larger than the sum of its proper divisors (353448470).

406201642 is a wasteful number, since it uses less digits than its factorization.

406201642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637693.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 406201642 is about 20154.4447207061. Note that the first 3 decimals coincide. The cubic root of 406201642 is about 740.5946291901.

The spelling of 406201642 in words is "four hundred six million, two hundred one thousand, six hundred forty-two".