1000202042450 has 48 divisors (see below), whose sum is σ = 2041283240136. Its totient is φ = 362337331200.

The previous prime is 1000202042449. The next prime is 1000202042453. The reversal of 1000202042450 is 542402020001.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 59183698729 + 941018343721 = 243277^2 + 970061^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000202042453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14482271 + ... + 14551170.

Almost surely, 2^{1000202042450} is an apocalyptic number.

1000202042450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1000202042450 is an abundant number, since it is smaller than the sum of its proper divisors (1041081197686).

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

1000202042450 is a wasteful number, since it uses less digits than its factorization.

1000202042450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29033519 (or 29033514 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 1000202042450 its reverse (542402020001), we get a palindrome (1542604062451).

The spelling of 1000202042450 in words is "one trillion, two hundred two million, forty-two thousand, four hundred fifty".