412142021 has 4 divisors (see below), whose sum is σ = 412183200. Its totient is φ = 412100844.

The previous prime is 412142011. The next prime is 412142119. The reversal of 412142021 is 120241214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 120241214 = 2 ⋅60120607.

It is a cyclic number.

It is not a de Polignac number, because 412142021 - 2²² = 407947717 is a prime.

It is a super-2 number, since 2×412142021² = 339722090947928882, 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 (412142011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5150 + ... + 29168.

It is an arithmetic number, because the mean of its divisors is an integer number (103045800).

Almost surely, 2^412142021 is an apocalyptic number.

It is an amenable number.

412142021 is a deficient number, since it is larger than the sum of its proper divisors (41179).

412142021 is a wasteful number, since it uses less digits than its factorization.

412142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41178.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 412142021 is about 20301.2812649842. The cubic root of 412142021 is about 744.1873763273.

Adding to 412142021 its reverse (120241214), we get a palindrome (532383235).

The spelling of 412142021 in words is "four hundred twelve million, one hundred forty-two thousand, twenty-one".