1205742402 has 32 divisors (see below), whose sum is σ = 2685345600. Its totient is φ = 401026464.

The previous prime is 1205742401. The next prime is 1205742449. The reversal of 1205742402 is 2042475021.

1205742402 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1205742401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249 + ... + 49107.

It is an arithmetic number, because the mean of its divisors is an integer number (83917050).

Almost surely, 2^1205742402 is an apocalyptic number.

1205742402 is an abundant number, since it is smaller than the sum of its proper divisors (1479603198).

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

1205742402 is a wasteful number, since it uses less digits than its factorization.

1205742402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49327 (or 49321 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 1205742402 is about 34723.8016639883. The cubic root of 1205742402 is about 1064.3509316208.

The spelling of 1205742402 in words is "one billion, two hundred five million, seven hundred forty-two thousand, four hundred two".