1012021490 has 16 divisors (see below), whose sum is σ = 1843587648. Its totient is φ = 399931056.

The previous prime is 1012021487. The next prime is 1012021501. The reversal of 1012021490 is 941202101.

1012021490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608822 + ... + 610481.

It is an arithmetic number, because the mean of its divisors is an integer number (115224228).

Almost surely, 2^1012021490 is an apocalyptic number.

1012021490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012021490 is a deficient number, since it is larger than the sum of its proper divisors (831566158).

1012021490 is a wasteful number, since it uses less digits than its factorization.

1012021490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219393.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1012021490 is about 31812.2852055617. The cubic root of 1012021490 is about 1003.9912123642.

Adding to 1012021490 its reverse (941202101), we get a palindrome (1953223591).

The spelling of 1012021490 in words is "one billion, twelve million, twenty-one thousand, four hundred ninety".