101421342 has 64 divisors (see below), whose sum is σ = 248209920. Its totient is φ = 30441600.

The previous prime is 101421289. The next prime is 101421361. The reversal of 101421342 is 243124101.

It is a super-2 number, since 2×101421342² = 20572577226161928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66367 + ... + 67877.

It is an arithmetic number, because the mean of its divisors is an integer number (3878280).

Almost surely, 2^101421342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101421342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124104960).

101421342 is an abundant number, since it is smaller than the sum of its proper divisors (146788578).

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

101421342 is a wasteful number, since it uses less digits than its factorization.

101421342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1646 (or 1640 counting only the distinct ones).

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

The square root of 101421342 is about 10070.8163522130. The cubic root of 101421342 is about 466.3476410257.

Adding to 101421342 its reverse (243124101), we get a palindrome (344545443).

The spelling of 101421342 in words is "one hundred one million, four hundred twenty-one thousand, three hundred forty-two".