421142870 has 16 divisors (see below), whose sum is σ = 802649088. Its totient is φ = 158547840.

The previous prime is 421142867. The next prime is 421142873. The reversal of 421142870 is 78241124.

421142870 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (421142867) and next prime (421142873).

It is a super-2 number, since 2×421142870² = 354722633903673800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421142873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238486 + ... + 1238825.

It is an arithmetic number, because the mean of its divisors is an integer number (50165568).

Almost surely, 2^421142870 is an apocalyptic number.

421142870 is a deficient number, since it is larger than the sum of its proper divisors (381506218).

421142870 is a wasteful number, since it uses less digits than its factorization.

421142870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477335.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 421142870 is about 20521.7657622340. The cubic root of 421142870 is about 749.5658939696.

Adding to 421142870 its reverse (78241124), we get a palindrome (499383994).

The spelling of 421142870 in words is "four hundred twenty-one million, one hundred forty-two thousand, eight hundred seventy".