1421011692 has 18 divisors (see below), whose sum is σ = 3592001868. Its totient is φ = 473670552.

The previous prime is 1421011667. The next prime is 1421011693. The reversal of 1421011692 is 2961101241.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1421011693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19736238 + ... + 19736309.

Almost surely, 2^1421011692 is an apocalyptic number.

1421011692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1421011692 is an abundant number, since it is smaller than the sum of its proper divisors (2170990176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421011692 is a wasteful number, since it uses less digits than its factorization.

1421011692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39472557 (or 39472552 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1421011692 is about 37696.3087317578. The cubic root of 1421011692 is about 1124.2577337736.

The spelling of 1421011692 in words is "one billion, four hundred twenty-one million, eleven thousand, six hundred ninety-two".