1020345450 has 48 divisors (see below), whose sum is σ = 2534944896. Its totient is φ = 271609600.

The previous prime is 1020345437. The next prime is 1020345497. The reversal of 1020345450 is 545430201.

It is a super-2 number, since 2×1020345450² = 2082209674671405000, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020345450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83215 + ... + 94685.

It is an arithmetic number, because the mean of its divisors is an integer number (52811352).

Almost surely, 2^1020345450 is an apocalyptic number.

1020345450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020345450 is an abundant number, since it is smaller than the sum of its proper divisors (1514599446).

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

1020345450 is a wasteful number, since it uses less digits than its factorization.

1020345450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12079 (or 12074 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 1020345450 is about 31942.8466170440. The cubic root of 1020345450 is about 1006.7363365423.

Adding to 1020345450 its reverse (545430201), we get a palindrome (1565775651).

The spelling of 1020345450 in words is "one billion, twenty million, three hundred forty-five thousand, four hundred fifty".