1421216870 has 16 divisors (see below), whose sum is σ = 2563326000. Its totient is φ = 567345504.

The previous prime is 1421216843. The next prime is 1421216893. The reversal of 1421216870 is 786121241.

It is a happy number.

It is a congruent number.

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, 137417 + ... + 147396.

It is an arithmetic number, because the mean of its divisors is an integer number (160207875).

Almost surely, 2^1421216870 is an apocalyptic number.

1421216870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1421216870 is a deficient number, since it is larger than the sum of its proper divisors (1142109130).

1421216870 is a wasteful number, since it uses less digits than its factorization.

1421216870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285319.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 1421216870 is about 37699.0300936244. The cubic root of 1421216870 is about 1124.3118411990.

The spelling of 1421216870 in words is "one billion, four hundred twenty-one million, two hundred sixteen thousand, eight hundred seventy".