1421154650 has 24 divisors (see below), whose sum is σ = 2647801884. Its totient is φ = 567504000.

The previous prime is 1421154649. The next prime is 1421154671. The reversal of 1421154650 is 564511241.

It can be written as a sum of positive squares in 6 ways, for example, as 811509169 + 609645481 = 28487^2 + 24691^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6404 + ... + 53696.

Almost surely, 2^1421154650 is an apocalyptic number.

1421154650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421154650 is a deficient number, since it is larger than the sum of its proper divisors (1226647234).

1421154650 is a wasteful number, since it uses less digits than its factorization.

1421154650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47906 (or 47901 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 1421154650 is about 37698.2048644229. The cubic root of 1421154650 is about 1124.2954337327.

Adding to 1421154650 its reverse (564511241), we get a palindrome (1985665891).

The spelling of 1421154650 in words is "one billion, four hundred twenty-one million, one hundred fifty-four thousand, six hundred fifty".