1634727042 has 128 divisors (see below), whose sum is σ = 4118688000. Its totient is φ = 477066240.

The previous prime is 1634727019. The next prime is 1634727049. The reversal of 1634727042 is 2407274361.

1634727042 is a `hidden beast` number, since 1 + 6 + 347 + 270 + 42 = 666.

1634727042 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1634726988 and 1634727006.

It is not an unprimeable number, because it can be changed into a prime (1634727049) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1200442 + ... + 1201802.

It is an arithmetic number, because the mean of its divisors is an integer number (32177250).

Almost surely, 2^1634727042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1634727042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059344000).

1634727042 is an abundant number, since it is smaller than the sum of its proper divisors (2483960958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1634727042 is a wasteful number, since it uses less digits than its factorization.

1634727042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473 (or 1467 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 1634727042 is about 40431.7578395993. The cubic root of 1634727042 is about 1178.0084768929.

The spelling of 1634727042 in words is "one billion, six hundred thirty-four million, seven hundred twenty-seven thousand, forty-two".