1021424650 has 24 divisors (see below), whose sum is σ = 1901646144. Its totient is φ = 408183600.

The previous prime is 1021424597. The next prime is 1021424653. The reversal of 1021424650 is 564241201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1021424653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47055 + ... + 65245.

It is an arithmetic number, because the mean of its divisors is an integer number (79235256).

Almost surely, 2^1021424650 is an apocalyptic number.

1021424650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021424650 is a deficient number, since it is larger than the sum of its proper divisors (880221494).

1021424650 is a wasteful number, since it uses less digits than its factorization.

1021424650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19326 (or 19321 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1021424650 is about 31959.7348236809. The cubic root of 1021424650 is about 1007.0911467794.

Adding to 1021424650 its reverse (564241201), we get a palindrome (1585665851).

The spelling of 1021424650 in words is "one billion, twenty-one million, four hundred twenty-four thousand, six hundred fifty".