1421897150 has 24 divisors (see below), whose sum is σ = 2730045504. Its totient is φ = 550411200.

The previous prime is 1421897143. The next prime is 1421897171. The reversal of 1421897150 is 517981241.

It is a congruent number.

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, 457127 + ... + 460226.

It is an arithmetic number, because the mean of its divisors is an integer number (113751896).

Almost surely, 2^1421897150 is an apocalyptic number.

1421897150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421897150 is a deficient number, since it is larger than the sum of its proper divisors (1308148354).

1421897150 is a wasteful number, since it uses less digits than its factorization.

1421897150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917396 (or 917391 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 1421897150 is about 37708.0515274921. The cubic root of 1421897150 is about 1124.4912003744.

The spelling of 1421897150 in words is "one billion, four hundred twenty-one million, eight hundred ninety-seven thousand, one hundred fifty".