100142454 has 16 divisors (see below), whose sum is σ = 202821120. Its totient is φ = 32958120.

The previous prime is 100142443. The next prime is 100142467. The reversal of 100142454 is 454241001.

It is a happy number.

It is a super-2 number, since 2×100142454² = 20057022186284232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100142454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105162 + ... + 106109.

It is an arithmetic number, because the mean of its divisors is an integer number (12676320).

Almost surely, 2^100142454 is an apocalyptic number.

100142454 is an abundant number, since it is smaller than the sum of its proper divisors (102678666).

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

100142454 is a wasteful number, since it uses less digits than its factorization.

100142454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211355.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 100142454 is about 10007.1201651624. The cubic root of 100142454 is about 464.3791830843.

Adding to 100142454 its reverse (454241001), we get a palindrome (554383455).

The spelling of 100142454 in words is "one hundred million, one hundred forty-two thousand, four hundred fifty-four".