1421156199 has 16 divisors (see below), whose sum is σ = 1964997632. Its totient is φ = 912873888.

The previous prime is 1421156173. The next prime is 1421156213. The reversal of 1421156199 is 9916511241.

It is not a de Polignac number, because 1421156199 - 2²⁵ = 1387601767 is a prime.

It is a super-2 number, since 2×1421156199² = 4039369883912255202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421176199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50719 + ... + 73584.

It is an arithmetic number, because the mean of its divisors is an integer number (122812352).

Almost surely, 2^1421156199 is an apocalyptic number.

1421156199 is a deficient number, since it is larger than the sum of its proper divisors (543841433).

1421156199 is a wasteful number, since it uses less digits than its factorization.

1421156199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124446.

The product of its digits is 19440, while the sum is 39.

The square root of 1421156199 is about 37698.2254091622. The cubic root of 1421156199 is about 1124.2958422111.

The spelling of 1421156199 in words is "one billion, four hundred twenty-one million, one hundred fifty-six thousand, one hundred ninety-nine".