1285346402 has 18 divisors (see below), whose sum is σ = 1955086977. Its totient is φ = 633775000.

The previous prime is 1285346401. The next prime is 1285346423. The reversal of 1285346402 is 2046435821.

It can be written as a sum of positive squares in 2 ways, for example, as 892157161 + 393189241 = 29869^2 + 19829^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=25351.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1285346401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5120777 + ... + 5121027.

Almost surely, 2^1285346402 is an apocalyptic number.

1285346402 is a deficient number, since it is larger than the sum of its proper divisors (669740575).

1285346402 is an frugal number, since it uses more digits than its factorization.

1285346402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 1285346402 is about 35851.7280197203. The cubic root of 1285346402 is about 1087.2766517499.

The spelling of 1285346402 in words is "one billion, two hundred eighty-five million, three hundred forty-six thousand, four hundred two".