906945742 has 4 divisors (see below), whose sum is σ = 1360418616. Its totient is φ = 453472870.

The previous prime is 906945709. The next prime is 906945749. The reversal of 906945742 is 247549609.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247549609 = 197 ⋅1256597.

It is a junction number, because it is equal to n+sod(n) for n = 906945692 and 906945701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (906945749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226736434 + ... + 226736437.

It is an arithmetic number, because the mean of its divisors is an integer number (340104654).

Almost surely, 2^906945742 is an apocalyptic number.

906945742 is a deficient number, since it is larger than the sum of its proper divisors (453472874).

906945742 is a wasteful number, since it uses less digits than its factorization.

906945742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453472873.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 906945742 is about 30115.5398756190. The cubic root of 906945742 is about 967.9667410823.

The spelling of 906945742 in words is "nine hundred six million, nine hundred forty-five thousand, seven hundred forty-two".