5400123215 has 8 divisors (see below), whose sum is σ = 6482600880. Its totient is φ = 4318463232.

The previous prime is 5400123167. The next prime is 5400123217. The reversal of 5400123215 is 5123210045.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5400123215 is a prime.

It is a super-2 number, since 2×5400123215² = 58322661474363872450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5400123217) 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, 189794 + ... + 216383.

It is an arithmetic number, because the mean of its divisors is an integer number (810325110).

Almost surely, 2^5400123215 is an apocalyptic number.

5400123215 is a deficient number, since it is larger than the sum of its proper divisors (1082477665).

5400123215 is a wasteful number, since it uses less digits than its factorization.

5400123215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408841.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 5400123215 is about 73485.5306505981. The cubic root of 5400123215 is about 1754.4239866353.

The spelling of 5400123215 in words is "five billion, four hundred million, one hundred twenty-three thousand, two hundred fifteen".