157542405 has 8 divisors (see below), whose sum is σ = 252067872. Its totient is φ = 84022608.

The previous prime is 157542373. The next prime is 157542419. The reversal of 157542405 is 504245751.

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

It is not a de Polignac number, because 157542405 - 2⁵ = 157542373 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 5251399 + ... + 5251428.

It is an arithmetic number, because the mean of its divisors is an integer number (31508484).

Almost surely, 2^157542405 is an apocalyptic number.

157542405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157542405 is a deficient number, since it is larger than the sum of its proper divisors (94525467).

157542405 is a wasteful number, since it uses less digits than its factorization.

157542405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10502835.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 157542405 is about 12551.5897399493. The cubic root of 157542405 is about 540.0896113287.

The spelling of 157542405 in words is "one hundred fifty-seven million, five hundred forty-two thousand, four hundred five".