1101012400542 has 32 divisors (see below), whose sum is σ = 2345517119232. Its totient is φ = 343347292544.

The previous prime is 1101012400541. The next prime is 1101012400613. The reversal of 1101012400542 is 2450042101011.

It is a super-2 number, since 2×1101012400542² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101012400541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32301048 + ... + 32335115.

It is an arithmetic number, because the mean of its divisors is an integer number (73297409976).

Almost surely, 2^{1101012400542} is an apocalyptic number.

1101012400542 is an abundant number, since it is smaller than the sum of its proper divisors (1244504718690).

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

1101012400542 is a wasteful number, since it uses less digits than its factorization.

1101012400542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64636352.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 1101012400542 its reverse (2450042101011), we get a palindrome (3551054501553).

The spelling of 1101012400542 in words is "one trillion, one hundred one billion, twelve million, four hundred thousand, five hundred forty-two".