100400542 has 8 divisors (see below), whose sum is σ = 164291832. Its totient is φ = 45636600.

The previous prime is 100400533. The next prime is 100400551. The reversal of 100400542 is 245004001.

It is an interprime number because it is at equal distance from previous prime (100400533) and next prime (100400551).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281809 + ... + 2281852.

It is an arithmetic number, because the mean of its divisors is an integer number (20536479).

Almost surely, 2^100400542 is an apocalyptic number.

100400542 is a deficient number, since it is larger than the sum of its proper divisors (63891290).

100400542 is a wasteful number, since it uses less digits than its factorization.

100400542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563674.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 100400542 is about 10020.0070858258. The cubic root of 100400542 is about 464.7777748800. Note that the first 5 decimals are identical.

Adding to 100400542 its reverse (245004001), we get a palindrome (345404543).

The spelling of 100400542 in words is "one hundred million, four hundred thousand, five hundred forty-two".