1203216642 has 12 divisors (see below), whose sum is σ = 2606969430. Its totient is φ = 401072208.

The previous prime is 1203216593. The next prime is 1203216647. The reversal of 1203216642 is 2466123021.

1203216642 is a `hidden beast` number, since 1 + 2 + 0 + 3 + 2 + 16 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1121513121 + 81703521 = 33489^2 + 9039^2 .

It is not an unprimeable number, because it can be changed into a prime (1203216647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33422667 + ... + 33422702.

Almost surely, 2^1203216642 is an apocalyptic number.

1203216642 is an abundant number, since it is smaller than the sum of its proper divisors (1403752788).

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

1203216642 is a wasteful number, since it uses less digits than its factorization.

1203216642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66845377 (or 66845374 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1203216642 is about 34687.4133079998. The cubic root of 1203216642 is about 1063.6072198856.

Adding to 1203216642 its reverse (2466123021), we get a palindrome (3669339663).

The spelling of 1203216642 in words is "one billion, two hundred three million, two hundred sixteen thousand, six hundred forty-two".