1421212023 has 36 divisors (see below), whose sum is σ = 2605124808. Its totient is φ = 738289440.

The previous prime is 1421212007. The next prime is 1421212043. The reversal of 1421212023 is 3202121241.

It is a happy number.

It is not a de Polignac number, because 1421212023 - 2⁴ = 1421212007 is a prime.

It is a super-2 number, since 2×1421212023² = 4039687228639505058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421211987 and 1421212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421212003) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 141636 + ... + 151337.

It is an arithmetic number, because the mean of its divisors is an integer number (72364578).

Almost surely, 2^1421212023 is an apocalyptic number.

1421212023 is a deficient number, since it is larger than the sum of its proper divisors (1183912785).

1421212023 is a wasteful number, since it uses less digits than its factorization.

1421212023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293004 (or 292994 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1421212023 is about 37698.9658080961. The cubic root of 1421212023 is about 1124.3105630582.

Adding to 1421212023 its reverse (3202121241), we get a palindrome (4623333264).

It can be divided in two parts, 1421 and 212023, that added together give a square (213444 = 462²).

The spelling of 1421212023 in words is "one billion, four hundred twenty-one million, two hundred twelve thousand, twenty-three".