1020454004 has 12 divisors (see below), whose sum is σ = 1788780000. Its totient is φ = 509374008.

The previous prime is 1020454003. The next prime is 1020454007. The reversal of 1020454004 is 4004540201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020454003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210554 + ... + 215345.

It is an arithmetic number, because the mean of its divisors is an integer number (149065000).

Almost surely, 2^1020454004 is an apocalyptic number.

It is an amenable number.

1020454004 is a deficient number, since it is larger than the sum of its proper divisors (768325996).

1020454004 is a wasteful number, since it uses less digits than its factorization.

1020454004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426502 (or 426500 counting only the distinct ones).

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

The square root of 1020454004 is about 31944.5457629311. The cubic root of 1020454004 is about 1006.7720373209.

Adding to 1020454004 its reverse (4004540201), we get a palindrome (5024994205).

The spelling of 1020454004 in words is "one billion, twenty million, four hundred fifty-four thousand, four".