151212494 has 4 divisors (see below), whose sum is σ = 226818744. Its totient is φ = 75606246.

The previous prime is 151212461. The next prime is 151212497. The reversal of 151212494 is 494212151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 494212151 = 17 ⋅29071303.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151212497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37803122 + ... + 37803125.

It is an arithmetic number, because the mean of its divisors is an integer number (56704686).

Almost surely, 2^151212494 is an apocalyptic number.

151212494 is a deficient number, since it is larger than the sum of its proper divisors (75606250).

151212494 is an equidigital number, since it uses as much as digits as its factorization.

151212494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75606249.

The product of its digits is 2880, while the sum is 29.

The square root of 151212494 is about 12296.8489459699. The cubic root of 151212494 is about 532.7570745470.

The spelling of 151212494 in words is "one hundred fifty-one million, two hundred twelve thousand, four hundred ninety-four".